Mary-Kate and Ashley Olsen

Twin stars Mary-Kate and Ashley Olsen made their acting debut when they were only 6 months old, taking turns playing Michelle on the popular TV series Full House. The show led to a film career for the sisters, who starred together in dozens of family friendly films in the 1990s and early 2000s, including It Takes Two and New York Minute. They also returned to TV in 1998, with the series Two of a Kind.

Following years of dual stardom, the Olsens branched out as adults, asking to be viewed individually in the media, rather than as a pair. However, they could never completely separate from each other: together, they bought a movie production company in 2004, and co-founded two fashion lines soon after. Though no longer pursuing acting gigs, the Olsens—worth an estimated, combined $100 million—have maintained thousands of die-hard fans worldwide, who are eager to find out what the famous duo will do next.