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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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Shopper Testimonials
“I liked the design and thoughtful message that expressed the sentiment that I wanted to send. Cards arrived promptly and I like the option to personalize some of the cards.”
Doris - Nov 2nd, 2026
“I have used Greeting Card Universe (GCU) for quite some time. It is a pleasure to write a review for them. The website is the best of the sites I have seen, which are similar to GCU. I have found a card -- every time -- for-every- reason that I've needed. Thank you for the great card! Anthony”
Anthony - Nov 2nd, 2026
Cards per Page:
Cards: 4,835 Pages: 162
Most Popular Newest Show adult cards
60th Birthday to Sister, Pomeranian smiling wearin…
Happy 73rd Birthday to a Special Sister, Orange fl…
The Old Wagon, Happy Birthday for a Sister card
Sister Happy 2nd Birthday Adorable Girl and Cat Fa…
For Sister 68th Birthday White Flowers card
Happy 69th Birthday Sister with Typewriter, Chicka…
Hey, Sister Today is a Great Day to Celebrate a Bi…
Happy 55th Birthday to a Wonderful Little Sister, …
Sister 91st Birthday Pink Teacup with Lily of the …
Scarecrow Shares with Your Sister October Birthday…
Birthday to OUR Favorite Sister with Tea Cup of Fl…
Sister, Birthday, Frog Jokes card
Happy Birthday Sister Vintage Look Flowers and Pap…
Birthday Card For Younger Sister To My Younger Sib…
For Sister Birthday Purple Violet Wildflower Art C…
Sister 12th Birthday to Awesome Tween African Amer…
Birthday Heart of Flowers for a Sweet Sister on he…
82nd Birthday, Sister, Pink Rose card
Happy Birthday to Sister Young Teen Girl on the Be…
100th Birthday for Sister, Pearls and Petals card
Birthday for Sister -Millie Ann Balanced Diet card
Big Sister Birthday with African American Fairy an…
For Niece February Birthday with Watercolour Wood …
Sister Basketball Balloon Theme Happy Birthday car…
Birthday to Big Sister with a Cute Goat Sitting in…
Sister 86th Birthday Pink Teacup with Lily of the …
Happy 64th Birthday to a Special Sister, Orange fl…
Happy 62nd Birthday for a Sister, Rudbeckia flower…
Birthday for Sister-Millie Ann-Think Pawsitive car…
Happy 76th Birthday or a Stunning Sister, Purple A…
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