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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 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
Sister 32nd Birthday Green Flowers card
For Sister on Birthday Pink Moth Orchids Watercolo…
Sister 38th Birthday Green Flowers card
For Sister on 18th Birthday Custom Pink Japanese A…
Happy Birthday to Sister- Three Whimsical Cakes wi…
Happy Birthday to my Sister Red Poppies Flowers Bu…
1st Birthday, Sister, Happy Dog, Party Hat card
33rd Birthday, Sister, Pink Rose card
29th Birthday, Sister, with Magnolia card
Birthday, Sister, Tropical Waterfall, Flamingos, I…
Birthday to Sister Humor with a Lovely Spring Day …
Best Sister Ever 87th Birthday Typography in Pink …
Sister, 30th, Happy Birthday, Mason Jar, Flowers, …
Happy 57th Birthday for a Sister, Rudbeckia flower…
Happy 58th Birthday for a Sister, Rudbeckia flower…
Sister, 37th, Happy Birthday, Mason Jar, Flowers, …
Happy 53rd Birthday, Sister, Monarch Butterfly car…
Happy 61st Birthday for a Sister, Rudbeckia flower…
Happy 52nd Birthday, Sister, Monarch Butterfly car…
My Sister Birthday Pink Tulip Flower card
Happy Birthday Sister Stylistic Daisies and Butter…
Happy 100th Birthday for a Sister, Rudbeckia flowe…
Happy 24th Birthday Sister with Typewriter, Chicka…
Happy Birthday, A Little Birdie Told Me_Big Sister…
Birthday Heart of Flowers for a Sweet Sister card
Birthday to Sister, Humor, Raccoon looking at toes…
Happy Birthday, Little Sister, Monarch Butterfly o…
Happy 40th Birthday for a Sister, Rudbeckia flower…
25th Happy Birthday Sister, Magnolia Blossom card
Happy 72nd Birthday for a Sister, Rudbeckia flower…
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