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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
Happy Birthday for Sister-Love Angels card
Happy Summertime Birthday to Sister- Bees and Hone…
Sister Birthday Lucky To Have You Wishes and Dream…
Happy Birthday, Sister, Vintage card
For Sister Birthday Card - Blue and Light Orange F…
To Sister Happy Birthday Wishes Mermaid Combing Ha…
Happy 79th Birthday to a Special Sister, Orange fl…
Sister/50th Birthday - Stick Girl in a Purple & Pi…
Happy 80th Birthday or a Stunning Sister, Purple A…
Happy 55th Birthday to a Special Sister, Orange fl…
60th Birthday for Sister, pink hollyhock card
For Sister on Birthday Watercolor Pink Rose Illust…
Happy Birthday Sister Wine Grapes and wine Barrel …
Birthday, Sister, Window Box With Colorful Flowers…
Little Sister Birthday, Unicorn Sitting On Rainbow…
To a Very Special Sister, Happy Birthday! Bold Pin…
Birthday, Sister, Floral Elegance with Purple Tuli…
Sister 50th Birthday White Flowers card
59th Birthday, Sister, Pink Rose card
Birthday for Sister with Bright and Modern Waterco…
55th Happy Birthday Sister, Magnolia Blossom card
BIRTHDAY, SISTER, Dreamy Vintage Tea Set, Soft Pas…
To my sister,birthday blessings,christian birthday…
Happy Birthday Sister Garden Bouquet card
Fifty Fifth Birthday Card Cartoon Bear My Sister’s…
Happy Birthday for Sister Party Frog card
One In a Million Sister Happy Birthday card
Happy Birthday Sister Typography Pastel Diagonal S…
Birthday to Little Sister with a Goat in a Cart Se…
Happy 10th Birthday to Sister Pretty Ballerina car…
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