The hundredth day lands better when the teacher dresses up too, and the kids notice every detail. Below are 30 outfits for teachers: age jokes, shirts covered in 100 small things, history looks and number themes. I've kept each one wearable for a full school day, so the shoes are comfortable, the accessories stay put and there's a layer for a cold classroom. Most come together from closet basics, thrift finds, printables and a bag of craft felt. Before you pick, check your school's dress code, be honest about how many evenings you have to prepare, and think about what the class will actually be doing that day.
Putting 100 Pieces on a Shirt in One Evening
Most of these outfits come down to attaching a hundred small things to a top, and the order you work in decides whether it takes one evening or three. This is how I do it.
- Wash and dry the shirt first. New cotton shrinks a little, and glue or paint put on before that first wash will ripple once it does.
- Slide a flat piece of cardboard inside, between the front and back. It stops glue and paint going through and keeps the fabric taut while you work.
- Mark a ten by ten grid with tailor's chalk or a washable fabric marker. Shirts curve over the body, so leave a little extra room across the bust or chest and keep pieces out of the underarm area.
- Cut all hundred pieces and count them into ten piles of ten before you glue anything. Recounting on the shirt is where people lose track.
- Use flexible fabric glue for felt, buttons and pom-poms. Hot glue is quick, but it turns stiff and pops off a stretchy knit as soon as you move your arms.
- Let it lie flat to cure for a full day. Most fabric glues need about that long to reach full strength, so finishing the night before is cutting it fine.
Felt is the easiest material for beginners because it doesn't fray and cuts cleanly with sharp scissors. If you'll want to wear the shirt again next year, sew the pieces on instead, with a couple of stitches each. It takes longer but survives the wash.
1. 100-Year-Old Teacher Costume With Floral Dress
A cheerful floral dress gives you a 100-year-old teacher who can still sit on the carpet for story time. I'd choose a loose midi and add a soft cardigan, then opaque tights and supportive loafers or clean walking sneakers. Put your own hair in a low bun, or pin a short silver wig at the crown and behind each ear so it doesn't shift when you bend over a desk. Rosy blush, lightly filled brows and a few expression lines in brown pencil give the age without looking grim. Oversized glasses, a pearl-style necklace and a small handbag finish it. Skip the walking-stick prop in a crowded room; a scrapbook labelled “100 Years of Memories” is safer and gives the kids something to ask about.
2. 100-Year-Old Teacher Costume With Cardigan And Slacks
Want a costume made entirely of things you already own? High-waisted slacks, a tucked-in patterned blouse and a buttoned cardigan in burgundy or navy get you most of the way. Compression-style socks and cushioned lace-up sneakers keep it practical. A neatly parted silver wig, pinned back, is what makes it read as a hundred years old. Keep the makeup soft: pink cheeks, a neutral lip, a few blended lines near the eyes. Reading glasses on a chain, a handkerchief and a big wristwatch are the small touches, and a thick planner titled “My First 100 Years” is the prop. It's funny but still tidy enough for a staff meeting or recess duty.
3. 100-Year-Old Professor Costume With Tweed Blazer
The 100-year-old professor is a tweed blazer over a white button-down, straight-leg trousers in brown or olive, and a sweater vest with a bow tie. I like tweed for this because it already looks old and it hides chalk dust. Brown loafers with cushioned insoles keep your feet happy. Use a side-parted silver wig, or dust temporary white hair colour lightly through your own hair; test it first, because some sprays rub off onto collars. Round glasses and softly defined brows are all the makeup it needs. Carry a stack of old-looking books tied with ribbon and a chalkboard sign reading “Teaching for 100 Years,” plus a pocket watch if you have one.
4. 100-Year-Old Teacher Costume With Housecoat
This is the cosy one. A colourful housecoat or belted robe goes over a plain T-shirt and relaxed pants, and it needs to be opaque with closures that actually hold, since you'll be reaching and bending all day. Wear supportive slip-on sneakers rather than real slippers, which slide on classroom floors. Lightweight foam rollers in your own hair, or a curly grey wig, set the scene. Oversized glasses, pink blush and bright lipstick make your face more animated. A fabric tote with a crossword book, pencils and a pretend giant remote is the prop. A necklace of 100 big craft beads ties it back to the counting theme; string it on stretchy cord so it gives if a small hand grabs it.
5. 100 Days Smarter Teacher Shirt Outfit
A “100 Days Smarter” shirt is the quickest route, and it still looks put together with the right pieces around it. Pair the tee with straight-leg jeans or black ankle pants, depending on your dress code, then add a colourful open cardigan and clean white sneakers. A glittery “100” headband works with a ponytail, braid, bun or natural hair. Bright blush or one colourful eyeliner is enough celebration on the face. Carry a mini chalkboard with a sum that equals 100, or wear ten bracelets of ten beads each. If you're printing the slogan yourself on iron-on transfer, peel and press it a second time with baking paper over the top; that second press is what stops the edges lifting in the first wash.
6. 100 Buttons Teacher Shirt Costume
A hundred buttons in rows of ten turns your shirt into a counting lesson the kids can see from their seats. Use a sturdy cotton tee, because a thin one sags under the weight of that many buttons. I sew them on, two stitches through each, and knot every row separately so one broken thread doesn't free ten buttons at once. Washable fabric adhesive works if time is short, but give it a full day to cure before you wear it. Simple black pants and bright sneakers in a button colour suit it, with a button-covered headband and craft-foam button earrings. A big cardboard calculator is the prop. Keep heavy or sharp-edged buttons off the sleeves and cuffs, where they knock on desks.
7. 100 Pom-Poms Teacher Shirt Costume
Pom-poms are soft, bright and very popular with younger students, who will want to touch every single one. Start with a solid sweatshirt or heavyweight tee, since thin fabric puckers around that many glue spots, then attach 100 small pom-poms in a rainbow, heart or giant number. Fabric glue holds better than hot glue here; hot glue stiffens and peels away from knit fabric as it stretches. Leggings or relaxed jeans and matching high-tops go with it, plus two low buns with a few pom-poms on the hair ties. Keep pom-poms away from the underarms and the back where you lean on a chair. A pom-pom necklace and a bucket labelled “Count to 100” finish it.
8. 100 Stars Teacher Shirt Outfit
A hundred stars, in ten neat rows or one big “100” across the front, makes a festive shirt that still looks like normal classroom clothes. Wear it with navy trousers, a silver cardigan and metallic flats or white sneakers. A sleek ponytail with a star headband or removable star clips suits it, along with a touch of silver shadow and rosy blush. Foam star stickers are lighter than plastic gems and less likely to snag on furniture, but they let go once the room warms up, so put a dot of fabric glue under each one. A star-topped pointer or a poster reading “Our Class Has Shined for 100 Days” is the prop.
9. 100 Crayons Teacher Shirt Costume
Crayons give you plenty of colour without much effort. Attach 100 small foam crayon shapes to a sturdy white or black tee, sorted by colour family, then wear it with overalls or casual trousers and bright lace-up sneakers. A ponytail tied with slim coloured ribbons, or a paper crayon headband, does the hair. One vivid eyeliner and a soft pink lip keep the face simple. Carry an art caddy filled with oversized cardboard crayons. I number every tenth crayon from 10 to 100 with a fabric marker, so the shirt doubles as a number line. Keep everything flat; foam that stands proud of the fabric gets crushed and peels the moment you sit back in a chair.
10. 100 Pencils Teacher Shirt Costume
Pencils are the obvious school symbol, so a shirt with 100 pencil cutouts reads at a glance. Use printed fabric or lightweight felt rather than real pencils, which would make the shirt heavy and poke you every time you bend. Black jeans, a yellow cardigan and red or pink sneakers echo pencil colours. Tie a tidy braid or bun with pencil-print ribbon, and keep the makeup friendly with warm yellow shadow and a rosy lip. Foam ruler earrings and an oversized cardboard pencil labelled “100 Days of Learning” are the props. Felt cuts cleanly and doesn't fray, so you can cut all hundred in an evening; set them out in groups of ten before gluing.
11. 100 Erasers Teacher Shirt Outfit
A shirt with 100 eraser shapes carries a sweet message about learning from mistakes. Cut the shapes from pink, blue, purple and green craft felt and glue them flat to a sweatshirt, then add “100 Days of Trying Again” across the middle. Dark straight-leg pants and pink sneakers go with it, plus a practical ponytail with a big pink bow and natural makeup. A giant pretend eraser made from a decorated tissue box is a light, funny prop. Ten bracelets of ten beads each give the class another way to see 100. Because felt is soft and lies flat, nothing digs in when you sit at a desk or crouch beside a student.
12. 100 Apples Teacher Shirt Costume
Apples are the classic teacher motif, and red felt apples with a tiny green leaf cut very quickly in batches. Arrange 100 of them in ten groups of ten on a green, white or black shirt. I cut the leaves from a separate strip and glue them on last, because fiddly two-colour pieces are where most of the evening goes. Wear it with a denim skirt and leggings or comfortable black pants, with red flats, loafers or sneakers. An apple-print ribbon in a bun, fresh blush and a red-tinted balm keep it bright. Carry a light basket of numbered paper apples, not real fruit, and a sign reading “100 Days With an Amazing Bunch.” Keep apples small around the waistband, where they bend every time you sit.
13. 100 Bookworms Teacher Costume
Book-loving teachers can make 100 felt circles into a line of bookworms winding across a green or blue sweatshirt. Give each worm paper glasses or a tiny book. Corduroy pants and comfortable loafers or sneakers go with it, plus a loose bun held with pencil hair sticks that have blunt, covered ends. Round glasses and a soft green liner suit the theme. Carry a canvas tote full of classroom books and a big bookmark labelled “100 Days of Reading.” Number every tenth circle so the kids can follow the count. Overlapping the circles slightly makes the worms look like they're moving, and it hides any gaps where the glue has spread.
14. 100 Smiley Faces Teacher Shirt Outfit
Smiley faces read across a room better than almost any other motif, because the shape is so simple. Make ten rows of ten with yellow fabric stickers, felt circles or washable fabric paint. If you paint them, slip a piece of cardboard inside the shirt first so the paint doesn't soak through to the back. Relaxed jeans, a yellow cardigan and white sneakers with colourful laces suit it, with a high ponytail or curls held by yellow clips. Warm blush, glossy balm and a tiny smiley on one cheek in skin-safe makeup finish the face. Carry a yellow tote labelled “100 Days of Smiles” and write a kind classroom word under every tenth face.
15. 100 Hearts Teacher Shirt Costume
A hundred hearts is a gentle way to mark the kindness and friendships in your class. Decorate a pink, red or white sweatshirt with 100 lightweight fabric hearts in a few sizes, shaped into a large 100 or sorted into ten colour groups. Red trousers or dark jeans and cushioned white sneakers go with it, plus a side braid with heart clips. Rosy cheeks and pink lipstick keep it bright. Carry a heart poster that says “100 Days of Growing Together,” and write a kind word on a few hearts before you attach them. Glue each heart all the way to its edges. Loose points curl up, and little fingers find them and pull.
16. 100 Puzzle Pieces Teacher Shirt Costume
Puzzle pieces are a nice nod to problem-solving and teamwork. Cut 100 pieces from felt or craft foam, big enough to count but small enough that the shirt still bends. I find felt the better choice for anything worn all day, since foam stiffens a shirt and starts lifting at the corners. Place them in ten rows, leaving room for “100 Days Together.” Neutral pants and sneakers in one puzzle colour suit it, with a low ponytail and a puzzle-print headband. Colourful liner or a small geometric accent near one eye is enough makeup. One oversized foam puzzle piece makes a good photo prop, and numbering every tenth piece turns the shirt into a counting tool.
17. 100 Days Brighter Neon Teacher Outfit
Neon is loud, cheerful and easy to put together. Start with a neon “100 Days Brighter” tee over a fitted long-sleeve if the building is cold, then add black pants, a neon zip jacket and sneakers with bright accents. Fluorescent ribbons in a high ponytail, vivid liner and a touch of highlighter keep it school friendly. Oversized neon glasses and ten glow-coloured bracelets of ten beads each add the number detail. Carry a cardboard light bulb with 100 on it rather than anything with real lights or batteries. The black base is what keeps neon wearable; neon top and bottom together is a lot for a room of children to look at all day.
18. 100 Days Super Teacher Costume
Super Teacher works without copying any franchise. A school-colour tee with a large “100” emblem goes over black pants or leggings, plus high-tops and colourful wrist cuffs. The cape is the part to get right. I fasten it with hook-and-loop tape at the shoulders, never a tie at the throat, so it pulls free if a child grabs it or it catches on a chair. Keep it knee length so it clears rolling carts. A high ponytail or bun, bright liner and a small star by one eye finish it. Carry a light shield-shaped sign reading “100 Days Strong,” and a fabric utility belt holds flash cards, markers and counting cubes.
19. 100 Days Construction Teacher Costume
Construction makes sense for a class that has built something together over 100 days. A plaid shirt or school tee goes under reflective suspenders or a light safety-style vest, with khaki pants and flat, non-slip work-style boots. A low ponytail or bun has to fit under a plastic costume hard hat, so try them together before the day. Keep makeup natural, maybe one streak of washable grey face paint. Pin a big “100” to the vest and carry a foam ruler or cardboard blueprint titled “Building 100 Days of Knowledge.” A soft fabric tool belt holds pencils and sticky notes. Leave real tools at home; nothing sharp or heavy belongs in this one.
20. 100 Days Scientist Teacher Costume
The scientist is a white lab coat over a bright “Experiment 100” shirt with comfortable black trousers and clean sneakers. A deliberately fluffy bun or a short white wig gives the mad-scientist hair. Round safety-style glasses and a silver or blue liner add personality. Fill the coat pockets with foam numbers, paper formulas and plastic measuring spoons. My favourite prop here is a clear container holding 100 soft pom-poms; seal the lid with tape, because someone will shake it. A name badge reading “Professor One Hundred” is the finishing joke. Thrift a lab coat a size up so it slips over a sweater without pulling at the shoulders.
21. 100 Days Mathematician Teacher Costume
The mathematician puts the number itself front and centre. Write sums that equal 100 on a black tee in white fabric paint, then wear gray trousers and black-and-white sneakers with a light cardigan decorated in plus, minus, times and divide symbols. Fabric paint pens give much neater writing than a brush; practise a few sums on scrap fabric first, and let the paint dry flat overnight. A neat bun or side part with number clips, silver shadow and sharp liner suit the graphic look. Carry an oversized foam calculator and a lanyard of cards showing different ways to make 100. Ten bead strands of ten beads each can go around your neck. It's easy to adapt to your grade's level of maths.
22. 100 Days Artist Teacher Costume
The artist is colour from head to toe. Paint-splatter overalls go over a tee covered in 100 small painted dots; use washable fabric paint and count as you go, because recounting a dried shirt is maddening. Striped socks and bright canvas sneakers suit it. Tuck your hair into a loose bun under a soft beret, leaving your face clear. I'd use colourful liner and pink blush rather than face paint, which smudges on the first hug. Carry a cardboard palette with ten groups of ten coloured circles and an oversized foam paintbrush, and wear an apron with pockets for markers. It goes perfectly with a class 100-dot mural.
23. 100 Days Gardener Teacher Costume
Flowers are a natural symbol for everything the class has grown into over 100 days. Denim overalls go over a green shirt decorated with 100 small felt flowers, with a plaid overshirt and green or brown sneakers. Braids or a ponytail under a soft sun hat, fresh blush and a touch of green liner keep it simple. Carry a clean watering can filled with paper flowers and a sign reading “Growing Smarter for 100 Days.” Gardening gloves tucked into a pocket add detail. Choose fabric flowers rather than artificial stems with wire inside; the wire works its way out and scratches. Flat five-petal felt flowers cut fast if you fold the felt and cut two at a time.
24. 100 Days Explorer Teacher Costume
An explorer celebrates how far the class has travelled. Wear a khaki utility vest over a school-colour shirt, with olive or tan cargo pants and trail-style sneakers. Keep the pockets light: paper number cards, a small notebook and a soft measuring tape. Lots of loaded pockets drag a vest forward at the neck by lunchtime. Braid your hair or tuck it under a wide-brim fabric hat, and draw a small compass on one cheek in skin-safe makeup. Carry a cardboard map showing 100 stepping stones from the first day to today, plus toy binoculars or a light magnifying glass. Skip camouflage if your school prefers bright clothes.
25. 100 Days Time Traveler Costume
The time traveller mixes eras without copying any one character. A black jumpsuit, or a matching top and trousers, goes under a silver vest with metallic sneakers, a silver belt and a light wrist panel decorated with numbers counting to 100. A sleek high ponytail or sculpted bun with silver clips, blue liner and a little metallic accent at the temples keep it school friendly. Carry a big cardboard clock with its hands pointing to 100 and a sign reading “Traveling Through 100 Days,” with class photos around the edge. Metallic vinyl cracks when it's folded, so choose a soft metallic knit for the vest. It suits timeline and sequencing lessons.
26. School 100 Years Ago Teacher Costume
A teacher from a century ago doubles as a gentle history lesson. A high-neck blouse and calf-length skirt with an understated cardigan or fitted vest give the shape, and opaque tights with low-heeled lace-up boots keep it covered and comfortable. A low bun and minimal makeup fit the period. Small round glasses and a cameo-style brooch add detail. Carry a slate-style chalkboard, notebooks tied with ribbon and a wooden-look pointer made of light foam. Don't worry about perfect accuracy; the long skirt and high collar are what kids recognise as “old days,” and they're the bits worth getting right. It opens up easy conversations about how school has changed.
27. 1920s Teacher Outfit For 100 Days
For the 1920s version, choose a modest drop-waist midi dress, or a straight skirt with a loose blouse and long cardigan. Opaque tights and low T-strap shoes or flats go with it. A faux bob is easy: tuck long hair under at the nape and pin it, then add a narrow fabric headband without feathers. Softly defined eyes and a muted rose lip keep the makeup polished. Carry a vintage-style notebook labelled “Class of 100 Years Ago” and a small structured handbag. A long strand of costume beads looks right, but knot it short enough that it won't swing into a student's face when you lean over a desk. It suits lessons on schools, transport and daily life across generations.
28. 100 Days Rainbow Teacher Outfit
A rainbow outfit is bright, and each colour can carry part of the count. Decorate a white tee with 100 small rainbow arcs, or split 100 dots across several colour bands. Wear it with a rainbow-striped cardigan, blue jeans and white sneakers with multicoloured laces. Clip your hair in rainbow order, add one colourful liner and pink blush. A cloud-shaped sign reading “100 Days Make a Bright Year” and ten bracelets of ten beads each finish it. I keep the jeans and shoes neutral so the colour stays on the shirt and cardigan. That way it suits nearly any elementary dress code.
29. 100 Days Team Jersey Teacher Outfit
Treat the class as a team that has just finished 100 winning days. A custom jersey or oversized tee with “Team 100” on the front and 100 on the back goes over a fitted long-sleeve, with track pants and supportive athletic sneakers. Ribbons in school colours on a ponytail and two small stripes of washable face paint on the cheeks set the sporty tone. Carry a foam pennant reading “100 Days Strong.” Wear a whistle only as decoration, and leave it silent indoors. Striped socks and a light zip jacket finish it. If you're making the numbers yourself, cut them from felt and stitch around the edge, because iron-on numbers on athletic mesh rarely stick well.
30. Last-Minute 100 Days Teacher Costume
When the hundredth day sneaks up on you, you can still pull a costume together from what's at home. Attach 100 removable stickers to a plain shirt in ten rows of ten, then add jeans or black pants, a bright cardigan and your comfiest sneakers. A paper “100” headband goes on top of any hairstyle. Blush, mascara and a coloured lip balm are enough. Carry a handmade sign saying “Officially 100 Days Smarter,” and wear ten bracelets of ten beads each if you have the beads. Stickers start dropping off by mid-morning on a warm day, so press a small strip of removable fashion tape behind the ones at your elbows and waist. It takes almost no craft skill.
Silver Hair and Age Lines That Don't Frighten Little Ones
The 100-year-old looks are the favourites, and they're also the ones most likely to go wrong in front of five-year-olds. Keep the age cheerful. A few short, soft lines at the outer eyes and two curved lines from nose to mouth, drawn in a brown pencil and blended with a fingertip, are enough. Dark grey or black lines look harsh under classroom lights and can upset small children.
If you use temporary white or silver hair spray, do it outside or over an old towel, let it dry fully and then brush it through. It still rubs off onto collars and car headrests, so wear a darker cardigan you don't mind washing. A wig is cleaner. Pin it at the crown and behind both ears, because you'll be bending and turning all day and a loose wig slides back.
Always patch-test any face makeup or paint on the inside of your wrist the night before. To take it off, use a cleansing oil or balm and then a gentle wash rather than scrubbing; pencil lines lift easily that way, and your skin will thank you before the next school day.
Comfort Comes Before the Hundredth Button
The right hundredth-day outfit lets you celebrate without making the teaching harder. Comfortable shoes, light decorations, accessories that stay put and safe props can turn even a basic shirt into something the class remembers. Go for an age joke if you want laughs, a 100-object shirt if you want counting practice, or a job costume that ties the milestone to learning. Adjust colours and layers for your dress code, the weather and your timetable. If I could give one piece of advice, it would be to sit down, crouch and reach up in the finished shirt the night before, because that's when any loose piece shows itself. Then let the outfit be about the progress your class has made together.
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