And while you might not see your sister as often as you'd like, her birthday is the perfect opportunity to express just how ...

These funny, heartfelt, and sentimental birthday wishes go perfectly in a card (especially when paired with a gift for your sister), in an Instagram caption, or even in an early birthday morning text.

That’s why it’s so important to find the right birthday wishes for sister—to let her know you care. Ahead, find the best birthday wishes for your sister that will make her feel great about ...

She borrowed (and never returned) your favorite blouse, took your side during fights with your parents, offered a shoulder to cry on during your first break up—you name it, she’s been with you ...