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Birthday Cards for Sister

Browse our collection of birthday cards for sisters! What relationship in your life is more special than the one you share with your sister? No matter what stage of life you are both in, whether she is older, younger or even a twin, we have the perfect card to express your heartfelt birthday wishes. Our birthday cards for sisters cover the gamut from sweet and sentimental to funny and sarcastic.

We offer cards for milestone birthdays, pretty cards, sentimental cards, trendy cards, humorous cards and cards that can be customized to say just what you want. You can even add a picture to make your card truly one-of-a-kind. Don't settle for another generic card off the rack, create a personalized card that she'll cherish as a keepsake for years to come! Once you find the perfect birthday card for your sister, we'll print and mail it the next day!
Birthday Cards for Sister

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Birthday (191,703)
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Shopper Testimonials
“Great quality and excellent packaging to protect the delivery. I also love your wide selection of cards. I will be back!”
Susan - Nov 1st, 2026
“I have given the GCU name to more than a few of people to whom I have sent your cards. I should be getting a commission for the business I send your way. EVERYONE loves your cards.”
Kathleen - Masonic Home, Kentucky - Nov 2nd, 2026
Cards per Page:
Cards: 4,861 Pages: 163
Most Popular Newest Show adult cards
Happy Birthday for a Special Big Sister, Lady Slip…
Happy 61st Birthday or a Stunning Sister, Purple A…
Happy Birthday to Sister Keep Calm and Be Amazing …
Sister Birthday Party with Whimsical Cake, Balloon…
Birthday Heart of Flowers for a Sweet Sister on he…
Happy 40th Birthday, Sister, Monarch Butterfly car…
Birthday for Sister, raccoons itching with balloon…
Happy Birthday Sis card
Sister Birthday Unicorn Cats Best Friends Forever …
Happy 14th Birthday to My Sister Party Cake card
Hey Sister, its Your 71st Birthday, Sea Shells and…
71st Happy Birthday Sister, Magnolia Blossom card
Hey Sister, its Your 62nd Birthday, Sea Shells and…
Birthday for Sister Watering Can with Flowers Wish…
51st Happy Birthday Sister, Magnolia Blossom card
Happy 66th Birthday to a Special Sister, Orange fl…
Happy 58th Birthday, Sister, Monarch Butterfly car…
Sister Happy Birthday Humor with Glass of Wine and…
Birthday, Sis, Flower Heart card
Happy Birthday Sister, Crazy cats and balloons. ca…
Birthday Greetings for Sister- Sharedy Cats?!-Cats…
For Sister Birthday Wishes Moonflower White Floral…
2nd Birthday, Sister, Happy Dog, Party Hat card
43rd birthday for sister, pearls and petals card
Happy Birthday,to my big sister,sad black and whit…
Big Sister, Happy Birthday!, Bar of Gold, Humor ca…
Add a picture,Sister age 25, with pink rose and je…
Happy 41st Birthday to a Special Sister, Orange fl…
For Sister Custom Age Birthday Cake with Strawberr…
Best Sister in the World Birthday card
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