Brilliant 21st Birthday Party Supplies

Turning 21 is more fun with Brilliant 21st Birthday Party Supplies. Featuring a variety of bright and bold colors, these adult birthday party supplies are great for both ladies and gents. With 21st birthday invitations, tableware, party decorations, and more, we have everything you need to throw a 21st birthday they can't forget!

Let friends and family know who's finally legal with 21st birthday invitations. The birthday boy or girl will feel extra special when they see the personalized banner and invitations made just for them! You even can customize the invites to include their name and a picture!

This party is 21 years in the making, so make it pop with color as you pop some bottles. Whether you're decorating the whole bar or the party room, a decorating kit is a must! Hang a 21st birthday banner and matching swirl decorations to let everyone know what milestone you're celebrating. The prismatic detailing on these 21st birthday decorations makes the party room shine almost as bright as the big 21-year-old. Round out the party decor with solid color streamers, balloons, and paper lanterns.

All eyes are on your friend when they don a light-up 21st birthday tiara and flashing necklace. With everything from party hats and headbands, to necklaces and buttons, you're sure to find some fun 21st birthday accessories that suit your bestie's personality. They might even get a few free drinks while wearing a 21st birthday sash!

Now that the decorations are in place, let the festivities begin. Your bestie can say cheers to 21 years in any shape or size cup their heart desires! Let them sip their first legal drink out of a 21st birthday martini glass, yard glass, goblet, or even a 21st birthday shot glass necklace. The matching plates and napkins are printed with a burst of colorful confetti and streamer detailing.

No party is complete without presents. Check out the variety of 21st birthday gag gifts and games below. With all of these Brilliant 21st Birthday Party Supplies, you can make their 21st birthday unforgettable (maybe just a little fuzzy)!

Tableware
Brilliant 21st Birthday Dessert Plates 8ct
7in Paper Plates
SKU:660413
MSRP: $4.85
Our Price: $2.42
Qty -+
Brilliant Birthday Dessert Plates 8ct
7in Paper Plates
SKU:660412
MSRP: $4.85
Our Price: $2.42
Qty -+
Brilliant Birthday Lunch Plates 8ct
9in Paper Plates
SKU:660411
MSRP: $6.30
Our Price: $3.15
Qty -+
Brilliant 21st Birthday Beverage Napkins 16ct
5in x 5in Paper Napkins
SKU:660416
MSRP: $3.50
Our Price: $1.75
Qty -+
Brilliant Birthday Beverage Napkins 16ct
5in x 5in Paper Napkins
SKU:660415
MSRP: $3.50
Our Price: $1.75
Qty -+
Brilliant Birthday Lunch Napkins 16ct
6 1/2in x 6 1/2in Paper Napkins
SKU:660414
MSRP: $4.35
Our Price: $2.17
Qty -+
Brilliant 21st Birthday Plastic Cups 25ct
16oz Plastic Cups
SKU:660427
$4.99
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Brilliant Birthday Table Cover
54in x 102in Plastic Table Cover
SKU:660417
MSRP: $6.90
Our Price: $3.45
Qty -+
Table Cover Clips 4ct
SKU:3880
$1.99
Qty -+
White Table Cover Clamps 4ct
SKU:181747
$3.99
Qty -+
Table Cover Clips 24ct
SKU:318509
$5.99
Qty -+
Back to topCutlery
Caribbean Blue Premium Plastic Forks 20ct
SKU:144539
$2.69
Qty -+
Caribbean Blue Premium Plastic Knives 20ct
SKU:144564
$2.69
Qty -+
Caribbean Blue Premium Plastic Spoons 20ct
SKU:144540
$2.69
Qty -+
Caribbean Blue Premium Plastic Cutlery Set 24ct
SKU:113951
$2.99
Qty -+
Caribbean Blue Cutlery Set 210pc
SKU:181695
$9.99
Qty -+
Back to topDrinkware
BOGO Caribbean Blue Plastic Cups 50ct
12oz Plastic Cups
SKU:390388
$6.99
Qty -+
Add 2 to your cart, but pay for 1
BOGO Caribbean Blue Plastic Cups 50ct
16oz Plastic Cups
SKU:345892
$7.99
Qty -+
Add 2 to your cart, but pay for 1
Caribbean Blue Premium Plastic Champagne Flutes 18ct
5.5oz Plastic Flutes
SKU:439843
$9.99
Qty -+
Caribbean Blue Premium Plastic Wine Glasses 18ct
10oz Plastic Glasses
SKU:439832
$9.99
Qty -+
Back to topInvitations
Custom Brilliant 21st Birthday Invitation
As low as $0.90 each
SKU:667592
$10 off custom products with any $75 purchase using code INSCRIBE
See Price List
Add to Basket to Customize
Custom Brilliant 21st Birthday Photo Invitation
As low as $0.90 each
SKU:667593
$10 off custom products with any $75 purchase using code INSCRIBE
See Price List
Add to Basket to Customize
Custom Brilliant 21st Birthday Thank You Note
As low as $1.00 each
SKU:667648
$10 off custom products with any $75 purchase using code INSCRIBE
See Price List
Add to Basket to Customize
Back to topBanners
Custom Brilliant 21st Birthday Banner
As low as $19.99
SKU:667693
$10 off custom products with any $75 purchase using code INSCRIBE
See Price List
Add to Basket to Customize
Custom Brilliant 21st Birthday Photo Banner
As low as $19.99
SKU:667694
$10 off custom products with any $75 purchase using code INSCRIBE
See Price List
Add to Basket to Customize
Metallic Black & White Birthday Banner
25ft Foil Decoration
SKU:633103
$4.99
Qty -+
Brilliant 21st Birthday Banner
65in x 33 1/2in Plastic Decoration
SKU:660421
$3.99
Qty -+
Time To Party Custom Banner 6ft
SKU:404437
$3.99
Qty -+
Prismatic Black & White Happy Birthday Letter Banner
7 3/4ft Cardstock Decoration
SKU:633106
$4.99
Qty -+
21st Birthday Warning Tape
3in x 45ft Plastic Decoration
SKU:660423
$3.99
Qty -+
Back to topDecorations
Brilliant 21st Birthday Confetti 1.2oz
1.2oz Confetti
SKU:662461
$2.99
Qty -+
Star Burst Value Confetti 2 1/2oz
SKU:404449
$5.99
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Brilliant 21st Birthday Spray Centerpiece
2 3/4in x 18in Cardstock & Foil Decoration
SKU:660422
$4.99
Qty -+
Brilliant 21st Birthday Shot Glass Holder
10in x 21in Foam Stand
SKU:660435
$5.99
Qty -+
Brilliant 21st Birthday Swirl Decorations 12ct
Cardstock & Foil Decorations
SKU:660419
$5.99
Qty -+
Time to Party Room Decorating Kit 11pc
SKU:218435
$7.99
Qty -+
Caribbean Blue Fluffy Decorations 3ct
16in Paper Decorations
SKU:420809
$6.99
Qty -+
Caribbean Blue Paper Lanterns 3ct
9 1/2in Paper Decorations
SKU:420763
$6.99
Qty -+
Party Time String Decoration
Measures 7ft Long
SKU:218428
$3.99
Qty -+
Silver Doorway Curtain
8ft x 3ft Foil Decoration
SKU:4294
$8.99
Qty -+
Back to topPinatas
Number 21 Pinata
17 1/2in x 20 1/2in x 3in Pinata
SKU:174690
$19.99
Qty -+
Number 21 Pinata Kit
20 1/2in x 17 1/2in Pinata
SKU:685670
ONLINE ONLY
$34.99
Qty -+
Back to topBalloons
Happy Birthday Balloon - A Time to Party
17in Foil Balloon
SKU:276274
Save 10% off balloons with purchase of a helium tank
$2.99
Out of Stock
Brilliant Birthday Balloon
18in Foil Balloon
SKU:689295
Save 10% off balloons with purchase of a helium tank
$2.99
Qty -+
21st Birthday Balloon - Radiant
27in Foil Balloon
SKU:272706
Save 10% off balloons with purchase of a helium tank
$9.99
Qty -+
Brilliant Birthday Balloon - Cubez
15in Foil Balloon
SKU:688698
Save 10% off balloons with purchase of a helium tank
$5.99
Qty -+
Happy Birthday Balloon - Giant A Time to Party
31in Foil Balloon
SKU:272712
Save 10% off balloons with purchase of a helium tank
$9.99
Qty -+
Brilliant 21st Birthday Balloon Bouquet 5pc
Foil Balloons
SKU:661086
Save 10% off balloons with purchase of a helium tank
$15.99
Qty -+
Back to topNumber Balloons
Number 1 Balloon - Silver
13in x 34in Foil Balloon
SKU:552219
Save 10% off balloons with purchase of a helium tank
$9.99
Qty -+
Number 1 Balloon - Black
13in x 34in Foil Balloon
SKU:608357
Save 10% off balloons with purchase of a helium tank
$9.99
Qty -+
Back to topSolid Color Balloons
Caribbean Blue Round Balloon
17in Foil Balloon
SKU:453391
Save 10% off balloons with purchase of a helium tank
$1.99
Qty -+
Caribbean Blue Star Balloon
19in Foil Balloon
SKU:453393
Save 10% off balloons with purchase of a helium tank
$1.99
Qty -+
Caribbean Blue Pearl Balloons 15ct
12in Latex Balloons
SKU:632399
Save 10% off balloons with purchase of a helium tank
$3.99
Qty -+
Caribbean Blue Pearl Balloons 72ct
12in Latex Balloons
SKU:632381
Save 10% off balloons with purchase of a helium tank
$8.99
Qty -+
Back to topHelium Tanks
Small Helium Tank 8.9cu ft
Ground Shipping Only
SKU:633299
Save 10% off balloons with purchase of a helium tank
$44.99
Qty -+
Large Helium/Air Tank 14.9 cu ft
Ground Shipping Only
SKU:633298
Save 10% off balloons with purchase of a helium tank
$54.99
Qty -+
Back to topBalloon Accessories
Caribbean Blue Foil Balloon Weight
5.5oz Balloon Weight
SKU:618398
$1.99
Qty -+
Turquoise Curling Ribbon
350yds Ribbon
SKU:129854
$2.99
Qty -+
Plastic Balloon Clips 144ct
SKU:14131
$3.99
Qty -+
Balloon Pump
SKU:193
$4.99
Qty -+
Balloon Drop Bag
SKU:2594
$7.99
Qty -+
LED Balloon Lights 12ct
SKU:412618
$9.99
Qty -+
Hi-Float Balloon Treatment
SKU:89075
$15.99
Qty -+
Back to topWearables
Silver 21st Birthday Fedora
8 1/2in x 10 1/2in Fabric Accessory
SKU:660442
$9.99
Qty -+
21st Birthday Beer Sunglasses
6 1/2in x 4in Plastic Accessory
SKU:660447
$6.99
Qty -+
Glitter Martini Sunglasses
6 1/2in x 4in Plastic Accessory
SKU:660446
$6.99
Qty -+
21 Shot Glass Sun-Stache
SKU:545295
$6.99
Qty -+
Beer Mug 21st Birthday Shot Glass Necklace
SKU:218400
$1.99
Qty -+
Prismatic 21st Birthday Pendant Bead Necklace
30in Plastic Accessory
SKU:660424
$3.99
Qty -+
Light-Up 21st Birthday Pendant Bead Necklace
34in Plastic Accessory
SKU:662466
$5.99
Qty -+
Finally Legal 21st Birthday Sash
2 3/4in x 5ft Fabric Accessory
SKU:660443
$5.99
Qty -+
21st Birthday Shot Glass Suspenders
SKU:660439
$9.99
Qty -+
21st Birthday Accessory Kit 6pc
Plastic & Cardstock Accessories
SKU:660426
$9.99
Qty -+
Light-Up Beer Mug 21st Birthday Button
1 3/4in x 2 1/4in Plastic Accessory
SKU:660437
$3.99
Qty -+
Birthday Light Up Button
SKU:404429
$3.99
Qty -+
21st Birthday Award Ribbon
SKU:660441
$3.99
Qty -+
Pink 21st Birthday Shot Glass Necklace
34in Plastic Accessory
SKU:660448
$4.99
Qty -+
Back to topNovelty Drinkware
Save Water Drink Booze Flexible Flask
14oz Plastic Flask
SKU:660450
$2.99
Qty -+
21st Birthday Martini Glass
8oz Plastic Cup
SKU:660429
$2.99
Qty -+
21st Birthday Yard Glass
16oz Plastic Cup
SKU:660445
$2.99
Qty -+
Jewel Tone 21st Birthday Shot Glasses 40ct
2oz Plastic Cups
SKU:660428
$4.99
Qty -+
Funny 21st Birthday Shot Glasses 6ct
1.5oz Plastic Cups
SKU:660431
$6.99
Qty -+
Brilliant 21st Birthday Flask
6oz Stainless Steel Flask
SKU:660434
$5.99
Qty -+
Black 21st Birthday Goblet
26oz Plastic Cup
SKU:660430
$7.99
Qty -+
21st Birthday Survival Kit
SKU:218413
$14.99
Qty -+
Back to topGames & Activties
Funny 21st Birthday Stickers 12ct
12 Stickers
SKU:660449
$0.99
Qty -+
Drinking Game Dare Necklace
34in Plastic Accessory
SKU:662465
$2.99
Qty -+
21st Birthday Pong Balls 6ct
SKU:662464
$2.99
Qty -+
Have You Ever Game
2 or More Players
SKU:660436
$3.99
Qty -+
Back to topNoisemakers
Prismatic Black & White Squawker Blowouts 8ct
3 3/4in Foil & Plastic Noisemakers
SKU:633110
$2.99
Black & White Fringe Blowouts 8ct
7 1/2in Cardstock & Foil Blowouts
SKU:633109
$3.99
Qty -+
Black & White Fringe Squawkers 30ct
6 3/4in Foil & Plastic Noisemakers
SKU:633112
$5.99
Qty -+
Black & White Horns & Blowouts 50ct
SKU:633111
$14.99
Qty -+
Back to topConfetti Poppers
Rainbow Tissue Paper Confetti Rolls 4ct
Tissue Paper Confetti
SKU:625478
$3.99
Qty -+
Purple Confetti Party Poppers 3ct
Foil Confetti
SKU:625476
$3.99
Qty -+
Purple Flutter Tissue Paper Confetti Wands 6ct
Tissue Paper Confetti
SKU:457391
$4.99
Qty -+
Giant Confetti Cannon
Paper Confetti
Ground Shipping Only
SKU:329402
$6.99
Qty -+
Back to topNumber Candles
21st Birthday Bottle Topper Candle Holder
SKU:660425
$3.99
Qty -+
Glitter Red Outline Number 21 Birthday Candle
2 1/4in x 2 3/8in Wax Candle
SKU:180265
$1.99
Qty -+
Purple Outline Number 1 Birthday Candle
1 1/2in x 3in Wax Candle
SKU:50176
$0.99
Qty -+
Giant Glitter Red Outline Number 1 Birthday Candle
1 1/2in x 5in Wax Candle
SKU:400382
$3.99
Qty -+
Back to topCake & Cupcake Supplies
Caribbean Blue Baking Cups 75ct
2in Paper Baking Cups
SKU:609076
$1.99
Qty -+
Mini Caribbean Blue Baking Cups 100ct
1 1/4in Paper Baking Cups
SKU:609098
$1.99
Qty -+
Caribbean Blue Cupcake Stand
11 1/2in x 11 3/4in Cardboard Stand
SKU:609064
$7.99
Qty -+
Silver Wire Cupcake Stand
9 1/2in x 8 1/2in Metal Stand
SKU:655369
$14.99
Qty -+
Recipe Right 12 Cup Mini Muffin Pan
SKU:184021
$5.99
Out of Stock
Recipe Right 12 Cup Muffin Pan
SKU:184022
$6.99
Qty -+
Round Performance Cake Pan 12in
SKU:5093
$9.99
Qty -+
Large Cupcake Pan 15in
SKU:440301
$29.99
Out of Stock
Violet Icing Tube 4.25oz
SKU:5133
$1.99
Qty -+
Light Blue Sparkle Gel 3.5oz
SKU:496760
$2.99
Qty -+
Violet Color Mist
Ground Shipping Only
SKU:251351
$3.79
Qty -+
Rainbow Nonpareils 7.5oz
SKU:184017
$4.99
Qty -+