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 ...

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 ...

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 through ...

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 hand ...

Got candles? Cake? A thoughtful gift? If so, then all that's left is to warm up your vocal chords ahead of singing “Happy Birthday” and signing the card. If you've picked out just the right one, but ...

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, ...