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
50% Off MSRP: $4.85
Our Price: $2.42
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Brilliant Birthday Dessert Plates 8ct
7in Paper Plates
SKU:660412
50% Off MSRP: $4.85
Our Price: $2.42
Qty -+
Brilliant Birthday Lunch Plates 8ct
9in Paper Plates
SKU:660411
50% Off MSRP: $6.30
Our Price: $3.15
Qty -+
Brilliant 21st Birthday Beverage Napkins 16ct
5in x 5in Paper Napkins
SKU:660416
50% Off MSRP: $3.50
Our Price: $1.75
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Brilliant Birthday Beverage Napkins 16ct
5in x 5in Paper Napkins
SKU:660415
50% Off MSRP: $3.50
Our Price: $1.75
Qty -+
Brilliant Birthday Lunch Napkins 16ct
6 1/2in x 6 1/2in Paper Napkins
SKU:660414
50% Off 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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Jewel Tone 21st Birthday Shot Glasses 40ct
2oz Plastic Cups
SKU:660428
$4.99
Qty -+
Brilliant Birthday Table Cover
54in x 102in Plastic Table Cover
SKU:660417
50% Off MSRP: $6.90
Our Price: $3.45
Qty -+
CLEAR Table Cover Clips 4ct
1 1/4 in x 2 1/4in Plastic Clips
SKU:3880
$1.99
Qty -+
White Table Cover Clamps 4ct
1 1/4 in x 2 1/4in Plastic Clamps
SKU:181747
$3.99
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
Brilliant 21st Birthday Banner
65in x 33 1/2in Plastic Decoration
SKU:660421
$3.99
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Brilliant 21st Birthday Banners 2ct
Cardstock Decorations
SKU:660420
$6.99
Qty -+
21st Birthday Warning Tape
3in x 45ft Plastic Decoration
SKU:660423
$3.99
Qty -+
Metallic Black & White Birthday Banner
25ft Foil Decoration
SKU:633103
$4.99
Qty -+
Prismatic Black & White Happy Birthday Letter Banner
7 3/4ft Cardstock Decoration
SKU:633106
$4.99
Qty -+
Back to topDecorations
Brilliant 21st Birthday Confetti 1.2oz
1.2oz Confetti
SKU:662461
$2.99
Qty -+
Brilliant 21st Birthday Spray Centerpiece
2 3/4in x 18in Cardstock & Foil Decoration
SKU:660422
$4.99
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Brilliant 21st Birthday Shot Glass Holder
10in x 21in Foam Stand
SKU:660435
$5.99
Qty -+
Brilliant 21st Birthday Room Decorating Kit 10pc
Cardstock & Paper Decorations
SKU:660418
$9.99
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 -+
Red Doorway Curtain
8ft x 3ft Foil Decoration
SKU:114568
$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
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 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
Black Foil Balloon Weight 6oz
SKU:165937
$1.99
Qty -+
Black Curling Ribbon
350yds Ribbon
SKU:70183
$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 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 -+
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
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Black 21st Birthday Goblet
26oz Plastic Cup
SKU:660430
$7.99
Qty -+
Back to topBirthday Wearables
Silver 21st Birthday Fedora
8 1/2in x 10 1/2in Fabric Accessory
SKU:660442
$9.99
Qty -+
Beer Mug Hat
Foam & Polyester Hat
SKU:185796
$14.99
Qty -+
21st Birthday Mini Top Hat Headband
Fabric & Plastic Accessory
SKU:660440
$9.99
Qty -+
21st Birthday Beer Sunglasses
6 1/2in x 4in Plastic Accessory
SKU:660447
$6.99
Qty -+
Beer Bottle Sunglasses
6in x 7 1/2in Plastic Accessory
SKU:404432
$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 -+
Birthday Party Masks 6ct
SKU:404445
$4.99
Qty -+
Birthday Body Jewelry 14pc
SKU:404446
$4.99
Qty -+
Beer Mug 21st Birthday Shot Glass Necklace
SKU:218400
$1.99
Qty -+
Drinking Game Dare Necklace
34in Plastic Accessory
SKU:662465
$2.99
Qty -+
Prismatic 21st Birthday Pendant Bead Necklace
30in Plastic Accessory
SKU:660424
$3.99
Qty -+
Pink 21st Birthday Shot Glass Necklace
34in Plastic Accessory
SKU:660448
$4.99
Qty -+
Bling Shot Glass Bead Necklace
34in Plastic Necklace
SKU:218422
$4.99
Qty -+
Light-Up 21st Birthday Pendant Bead Necklace
34in Plastic Accessory
SKU:662466
$5.99
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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 -+
Light-Up Brilliant 21st Birthday Button
2 1/4in Plastic Accessory
SKU:662462
$3.99
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21st Birthday Award Ribbon
SKU:660441
$3.99
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Feeling Tipsy T-Shirt
SKU:404454
$19.99
Qty -+
Back to topGames & Activties
Funny 21st Birthday Stickers 12ct
12 Stickers
SKU:660449
$0.99
Qty -+
21st Birthday Pong Balls 6ct
SKU:662464
$3.99
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
Qty -+
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
Out of Stock
Black & White Horns & Blowouts 50ct
SKU:633111
$14.99
Qty -+
Back to topConfetti Poppers
Confetti Party Poppers 12ct
Tissue Paper Confetti
Ground Shipping Only
SKU:13810
$2.99
Qty -+
Rainbow Tissue Paper Confetti Rolls 4ct
Tissue Paper Confetti
SKU:625478
$3.99
Out of Stock
Black Confetti Party Poppers 3ct
Foil Confetti
SKU:625474
$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 topSolid Color Tableware
Black Paper Dessert Plates 20ct
7in Paper Plates
SKU:3455
$3.49
Qty -+
Black Paper Lunch Plates 20ct
9in Paper Plates
SKU:3456
$4.49
Qty -+
Black Beverage Napkins 50ct
5in x 5in Paper Napkins
SKU:3453
$2.99
Qty -+
Black Lunch Napkins 50ct
6 1/2in x 6 1/2in Paper Napkins
SKU:3454
$4.49
Qty -+
Back to topCutlery
Black Premium Plastic Forks 20ct
7 1/4in Plastic Forks
SKU:66418
$2.69
Qty -+
Black Premium Plastic Knives 20ct
8in Plastic Knives
SKU:66419
$2.69
Qty -+
Black Premium Plastic Spoons 20ct
6 3/4in Plastic Spoons
SKU:66420
$2.69
Qty -+
Black Premium Plastic Cutlery Set 24ct
Cutlery for 8 Guests
SKU:113860
$2.99
Qty -+
Black Plastic Cutlery Set 210ct
Cutlery for 70 Guests
SKU:181701
$9.99
Qty -+
Back to topDrinkware
BOGO Black Plastic Cups 50ct
12oz Plastic Cups
SKU:287615
$6.99
Qty -+
Add 2 to your cart, but pay for 1
BOGO Black Plastic Cups 50ct
16oz Plastic Cups
SKU:287625
$7.99
Qty -+
Add 2 to your cart, but pay for 1
Jewel Tone Plastic Cups 40ct
10oz Plastic Cups
SKU:304367
$9.99
Qty -+
Jewel Tone Plastic Champagne Flutes 20ct
5.5oz Plastic Flutes
SKU:281731
$9.99
Qty -+
Jewel Tone Plastic Martini Glasses 20ct
8oz Plastic Glasses
SKU:304560
$9.99
Qty -+
Jewel Tone Plastic Margarita Glasses 20ct
10oz Plastic Glasses
SKU:304559
$9.99
Qty -+
Back to topSolid Color Decorations
Black Streamer
81ft Crepe Paper Streamer
SKU:75670
$0.89
Qty -+
Black Mini Fan Decorations 5ct
6in Paper Decorations
SKU:466607
$1.99
Qty -+
Black Swirl Decorations 12ct
22in Plastic Decorations
SKU:466611
$3.99
Qty -+
Black Paper Garland
12ft Paper Decoration
SKU:466595
$3.99
Qty -+
Black Decorating Kit 9pc
SKU:593728
$9.99
Qty -+
Black Fluffy Decorations 3ct
16in Tissue Paper Decorations
SKU:466591
$6.99
Qty -+
Black Paper Lanterns 3ct
9 1/2in Paper Decorations
SKU:466603
$6.99
Qty -+
Back to topSolid Color Balloons
Black Round Balloon
17in Foil Balloon
SKU:60618
Save 10% off balloons with purchase of a helium tank
$1.99
Qty -+
Black Star Balloon
19in Foil Balloon
SKU:60619
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 -+
Black Pearl Balloons 72ct
12in Latex Balloons
SKU:237858
Save 10% off balloons with purchase of a helium tank
$8.99
Qty -+
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 -+