Decade Day Outfits for School: 70s, 80s, 90s and Y2K

6 min read · Viralinc

The easiest decade day outfits for school come from your own closet: the 90s (baggy jeans, a flannel, a scrunchie) and Y2K (low-rise or flared jeans, a baby tee, tinted sunglasses) are the simplest because those trends are back, while the 70s and 80s need one or two statement pieces. Pick your decade below and pull the pieces you already own.

If your friends all want the 90s and you're about to show up as four identical flannels, The Costume Rack is made for group costume planning so nobody turns up as the same thing. Start my costume

Picking your decade

Before you raid your closet (or your parents'), pick the decade you already have the most pieces for. Here's a cheat sheet:

If you have nothing planned and it's decade day tomorrow, go 90s or 2010s. You likely already own it.

A good decade day costume is about exaggeration. Normal flares say "Tuesday." Flares plus a headband, tinted glasses and a peace sign say "70s."

Hair and makeup do half the work

Whatever decade you pick, the fastest way to sell it is your head, not your outfit:

• 50s: a high ponytail with a ribbon, or slicked-back hair.
• 60s: big winged eyeliner and a headband.
• 70s: center part, tinted glasses.
• 80s: a side ponytail, bright eyeshadow, or a sweatband.
• 90s: two face-framing strands, butterfly clips, or a backwards cap.
• Y2K: glossy lips, zigzag headband, tiny claw clips.

50s and 60s

50s outfit ideas

• Greaser (decade day outfits for boys). White tee, cuffed jeans, a leather or denim jacket, hair slicked back with gel. Roll a pack of gum into your sleeve for the joke.
• Sock hop (decade day outfits for girls). A full skirt or dress, a cardigan, a neck scarf, a high ponytail with a ribbon, and white socks with sneakers.
• Letterman look. Any varsity-style jacket, a sweater vest or button-up, loafers.

60s outfit ideas

• Mod. A mini dress or a shift dress in a bold print, white boots or tall socks, heavy eyeliner flicks.
• Beatles-core. Turtleneck, slim trousers, a mop-top hairstyle.
• Early hippie. Flowy top, a headband worn low on your forehead, drawn-on flowers.

70s

The 70s are all about flares, earth tones, and hair.

For girls:

• Flared jeans or corduroys, a tucked-in patterned blouse, platform shoes if you own them.
• Center-part hair, a headband across the forehead, round tinted sunglasses.
• A fringe vest or suede jacket if anyone in the house has one.

For guys:

• Flares or bootcut jeans, a wide-collar shirt unbuttoned one notch, a gold chain.
• Tinted aviators and a comb in your back pocket.
• Disco version: shiny shirt, a sequin anything, a paper vinyl record.

80s

80s decade day outfits are the loudest ones, which makes them fun.

For girls:

• Neon everything, leg warmers over leggings, an oversized off-shoulder sweatshirt.
• Big side ponytail, a scrunchie, blue or pink eyeshadow.
• A jean jacket covered in pins.

For guys:

• A windbreaker or track jacket, a headband, high socks with sneakers.
• Blazer with the sleeves pushed up over a pastel tee (big Miami Vice energy).
• A Walkman-style prop: old headphones and a cassette drawn on cardboard.

Decades day outfit ideas for boys often land best in the 80s because tracksuits and windbreakers are easy to find.

Here's where decade day goes wrong: your group says "let's all do the 80s," nobody checks, and half of you come as the same aerobics instructor. The Costume Rack handles the group planning part, so your crew agrees on who's doing which look before the morning of. Start my costume

90s

The 90s are the easiest decade day dress up ideas because half of it is just... current fashion.

90s outfits for girls:

• Baggy jeans or a plaid mini skirt, a baby tee or crop top, platform sneakers.
• A slip dress over a white tee.
• Butterfly clips, a claw clip, or two face-framing strands of hair.
• Plaid blazer + knee socks for the Clueless vibe.

90s outfits for guys:

• Flannel tied around the waist, baggy jeans, a band tee.
• Oversized windbreaker, a backwards cap, chunky sneakers.
• Frosted tips (use washable hair color or white temporary spray).

A downtown girl leather jacket and baggy jeans also read 90s. If that's your style, our downtown girl aesthetic room guide shows how the same vibe carries into your space.

Y2K and 2010s

Y2K outfit ideas for school

Y2K means roughly 1999 to the mid-2000s, and it's the most TikTok-friendly option.

• Girls: a baby tee with a slogan, low-rise or flare jeans, a zip-up velour hoodie, tinted sunglasses, a mini bag, lip gloss, a butterfly clip.
• Guys: an oversized graphic tee, cargo shorts or baggy jeans, a trucker hat, a puka shell necklace, a flip phone prop.

2010s outfit ideas

Yes, the 2010s count now. It's the decade most people can nail tonight.

• Skinny jeans, a graphic tee, a beanie, Converse.
• A flower crown and a denim vest (full music festival 2014).
• Galaxy leggings, a mustache print tee, a mason jar of "iced coffee."
• Say "on fleek" and "YOLO" unironically all day. That's the costume.

Doing it as a group? Decade day pairs perfectly with twin day ideas for school: same decade, matching outfits.

Lock in your decade with your crew

Decade day outfits for school are easy once you've picked a decade; the hard part is coordinating with friends. Start in The Costume Rack and plan it as a group, so nobody turns up as the same thing. It runs in your browser with no download and no account needed to try.

Start my costume

FAQ

What is the easiest decade day outfit?

The 90s or the 2010s. You probably already own baggy jeans, a flannel or a graphic tee and a beanie. Add one detail like a scrunchie or a flower crown to make it obvious.

What should a boy wear for decade day?

A 50s greaser (white tee, cuffed jeans, leather jacket), an 80s tracksuit, or a 90s flannel with baggy jeans and a backwards cap. These are the easiest decade day outfits for boys.

What are good 80s decade day outfits?

Neon clothes, leg warmers, a side ponytail and a scrunchie for girls; a windbreaker, headband and high socks for guys. Anything loud and bright works.

What are Y2K outfit ideas for school?

A baby tee, low-rise or flared jeans, a velour zip-up, tinted sunglasses and butterfly clips. For guys, a graphic tee, cargo shorts and a trucker hat.

How do I dress for decade day with no costume?

Go 2010s or 90s using what you own, then exaggerate one detail. Do the hair and makeup for the era, since that sells a decade faster than clothes.