It’s one of the most important dates in your calendar: Your sister’s birthday. No matter if it's a milestone birthday this year or she's simply celebrating another trip around the sun; it's always a ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." She borrowed (and never returned) your favorite blouse, took your side during fights with your parents, ...

If your sister's your bestie, you want to celebrate having her in your life on a daily basis. Though, her birthday is when the real party goes down. As her sis, you have the honor of ringing in pretty ...