18th Birthday Cards for Sister

Wish your sister a fabulous 18th with a card that reflects her style, from sweet and sentimental to bold and brilliant (or cheeky and annoying!). Whether she’s your twin flame or your biggest tease, we’ve got a design to match your sibling bond. Add her name, a loving message, or a photo for a personal touch she’ll cherish on her big day.

Similar Categories: Birthday Cards for Her | Birthday Age Cards | Funny Birthday Cards | 18th Birthday Gifts