6 products

    6 products

    Sibling Smiles: Playful Birthday Cards for Sisters from Karto

    Give your sister a birthday giggle or a heartfelt smile with a Karto card that’s as charming and vivacious as she is. From the confidante of your childhood to the ally of your adult years, our birthday cards for sisters celebrate the irreplaceable bond you share.

    Hunting for the Perfect Birthday Card for Your Sister?

    Swing by, where we’ve handpicked a variety of cards that echo the laughter, tears, and love only sisters understand.

    Find a Karto Card that Sings “Happy Birthday, Sister!”

    Our selection spans from whimsical and witty to sweet and sentimental, perfect for sisters of all stripes. Whether she loves a bit of sparkle or cherishes simple, thoughtful gestures, pick a card that’s as unique as your sisterly love. With Karto, you’re not just wishing her another year; you're celebrating the wonderful sister she is every day.