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21st Birthday Cards

Drink ... drank ... drunk? Not too much, we hope. Send a 21st Birthday Card to someone who has hit that milestone like a boss and is ready to celebrate. Choose from 790+ exceptional designs, add your personal message, and we'll mail it next business day. Throwing a party? No worries. We have 21st Birthday Party Invitations, too. Yeah, 'cause we're cool like that.

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Birthday (191,569)
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Shopper Testimonials
“Fabulous cards! Fabulous delivery! I will never buy cards anywhere else again!”
Rhoda - Oct 29th, 2026
“This site has a remarkable variety of cards, something for everyone. I've used them for men, women, kids of all ages, and several in Spanish. Service is just as good and reliable. Prices reasonable and even better when there is a Promo offered.”
Katherine - Oct 27th, 2026
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Cards per Page:
Cards: 635 Pages: 22
Most Popular Newest Show adult cards
Club 21 Blue card
Blue Butterfly 21st Birthday Card
Funny Birthday Card for a 21 year old card
21st Birthday Wishes Watercolor Pink Roses Illustr…
21st Birthday in stage spotlight with red curtains…
Happy 21st Birthday-Stick Figure Holding Sign card
Happy 21st Birthday Photo Card
You’re Actually An Adult Now Birthday Card
Multilanguage 21st Birthday Card - All Languages C…
Happy 21st Birthday Pink Watercolor Flowers card
21 Years Old Macarons with Candles Happy Birthday …
21st Birthday for Someone Special, Orange lily car…
21st Birthday Card You’re 21 Today And Legally Abl…
Party Animal Dancing in Moonlight 21st Birthday ca…
Happy 21st Birthday, greyhound dogs on the sofa ca…
Rustic Country Western Cowboy Happy 21st Birthday …
Dancing Girl in Cocktail on Black for 21st Birthda…
21st Birthday Religious Card Rainbow Blessings car…
Bungee Cow Birthday - 21 years old card
Happy 21st Birthday Cute Puppy in Party Hat Humor …
21st Birthday Purple Daisies card
21st Birthday - Boy card
OMG! you’re turning 27! card
Birthday, 21st, Garden of Flowers,Tourquoise Ribbo…
Mosaic 21st BIRTHDAY card
Custom Name Photo 21st Birthday Pink Yellow flower…
21st birthday with candles card
21st Happy Birthday Breakdancing Hip Hop Age Speci…
21st Birthday with Flowers and Butterflies card
Twenty one, Pretty 21st Birthday card for a female…
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