Mary Kate & Ashley, and Elizabeth Olsen - practically born into acting, the twins were cast as Michelle Tanner on the hit family sitcom Full House before they were 1-year-old. The two were inseparable with television shows, video collections, and movies that kept them busy through high school. The twins have since stepped back from acting and put fashion as their main focus. Younger sister, Elizabeth, who often appeared in movies and videos with her sisters, emerged as a star in her own right with the 2011 movie Martha Marcy May Marlene.