Today is Elizabeth Olsen's 23rd birthday! The younger sister of Mary-Kate and Ashley is definitely all grown up, and has become quite the sartorial star all on her own. Elizabeth caught our attention with her heartbreaking performance in 2011's Martha Marcy May Marlene, and has since solidified her place on the big screen as well as the red carpet. The actress has posed for magazines like W, Marie Claire, Vanity Fair, and even GQ — and does a fantastic job at playing the dual role of the subtly sexy ingénue and the wide-eyed girl next door. In honor of Lizzie's birthday today, we've rounded up 25 of her most stunning fashion spreads. Click through to see them all now.