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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 recently had an appointment with my doctor. She was tearful during the exam. The office help noticed and I chimed in. She began telling her story to me and I sent this card to cheer her up. I liked the inside message and front picture. I felt so happy. I was able to send this card to cheer her up a bit. She was going through a rough time personally. The card fit the situation. Paul Safran”
Paul - Camarillo, Ca. - Nov 1st, 2026
“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
Cards per Page:
Cards: 4,840 Pages: 162
Most Popular Newest Show adult cards
Sister 2nd Birthday Cupcake Hearts and Polka Dots …
Birthday Heart of Flowers for a Sweet Sister on he…
Pink Watercolor Roses Happy 30th Birthday Sister c…
24th Happy Birthday Sister, Magnolia Blossom card
Blue Flowers Sister Birthday Card
Sister Happy Birthday Card
Pink Watercolor Roses Happy 40th Birthday Sister c…
Little Sister 3rd Birthday Glittery Effect Butterf…
A Box Of Yummy Chocolates Birthday For Sister card
Happy 71st Birthday for a Sister, Rudbeckia flower…
For a Sweet Sister on Her 36th Birthday, Starfish …
Big Sister 8th Birthday Pretty Little Girl with Pu…
Happy 21st Birthday or a Stunning Sister, Purple A…
26th Birthday for a Special Sister, Magnolia Bloss…
Happy Birthday To My Sweet Sister! Floral Frame, C…
25th Birthday for a Special Sister, Magnolia Bloss…
Happy 34th Birthday to a Special Sister, Orange fl…
Sister Happy 2nd Birthday Snowman and a Snowy Two …
Happy 17th Birthday or a Stunning Sister, Purple A…
Happy 16th Birthday or a Stunning Sister, Purple A…
Happy Birthday Sister card
For a Sweet Sister on Her 33rd Birthday, Starfish …
16th Birthday for a Special Sister, Magnolia Bloss…
Wish Happy Birthday to Your Water Polo Player Sist…
Happy 28th Birthday to a Special Sister, Orange fl…
Happy 83rd Birthday or a Stunning Sister, Purple A…
Sister 15th Birthday Polka dots card
Happy 82nd Birthday for a Sister, Rudbeckia flower…
Happy 36th Birthday to a Wonderful Little Sister, …
Dutch tulip on wooden shoe for sister’s birthday c…
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