Do happy birthday wishes for your sister have you scratching your head? She’s your best friend. Your partner in crime. Your confidant. Your mentor, your biggest cheerleader, and your helping ...

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 ...