Robyn Lively (PHOTOS, VIDEOS) is Blake Lively's Sister. Every so often a celeb has a relative who's famous in their own right, and outside of show business.

You already know A-listers have major talent, major hotness, and a major fan following to match. But what you probably don't know: they're related to Hollywood heavyweights.

Robyn Lively is best known for her role in the film Teen Witch, as well as for her roles in the TV shows Doogie Howser, M.D., Twin Peaks, and Saving Grace.

Robyn Lively is the daughter of talent manager Elaine Lively and her first husband Ronnie Lively and her siblings are sister Lori and Jason, and her half-siblings are Blake and Eric.  Robyn Lively Photos and Robyn Lively Videos.