Pop culture is littered with celebrities and their lesser-than siblings. For every Jessica Simpson, Lindsay Lohan or Britney Spears, there's an Ashlee, Ali or Jamie Lynn, yearning to prove they're talented, too. In some cases, it's true - Warren Beatty and Shirley MacLaine, Maggie and Jake Gyllenhaal, John and Joan Cusack. Occasionally, a younger sibling outshines the elder - Julia and Eric Roberts, say, or Casey and Ben Affleck.

Most of the time, however, the sibs are a pale imitation. Think of Michael Jackson's kin (with the obvious exception of Janet). Or Alec Baldwin's (excepting no one).