"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, ...

It’s no secret that the bond shared between sisters is special. She’s the one who knows all your secrets, knows what makes you tick and will do just about anything for you. If you can’t lean on your ...

All the best ways to wish your first best friend a happy birthday. There's no love like that of a sister, and what better occasion to share that sentiment than on their birthday? Whether your sister ...

In an ideal world, you could harness the energy of a classic 18th-century poet while writing a birthday message for your sister. This is not the average relationship in your life—and your day one ...

Despite how cold and formal the “sister-in-law” title sounds, those sisters are still family. And be that the case, they deserve every bit of love and acknowledgment that our blood relatives get—hey, ...

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 ...