22-year-old Lizzie Olsen is poised to become the biggest actress in the Olsen family. She may have gotten her start with small roles in her sisters' straight-to-video movies (The Case of the U.S. Space Camp Mission and The Case of the Mystery Cruise, to name a few), but her latest movie, Martha Marcy May Marlene, just debuted in Cannes to much fanfare. She's gotten Oscar buzz and recently nabbed a few new choice roles, including a part in 2013's Very Good Girls alongside Dakota Fanning. Fashion-wise, Lizzie doesn't have the daring style of older sisters Mary-Kate and Ashley, but she's certainly listening to their advice. In Cannes, she showed loyalty to the family by wearing dresses by The Row to both her major red-carpet appearances. See how her style has evolved in our slideshow.