Olivia Thirlby, an American actress, was 20 years old when she landed the role of Leah in the romantic comedy “Juno” in 2007. In the film, she played the quirky cheerleader who gives advice to her friend Juno during her teenage pregnancy. Olivia appeared alongside Elliot Page as Juno, Michael Cera as Paulie, and Jennifer Garner as Vanessa. Want to see how she looks now in her late 30s?