Jennifer Lawrence (20) broke out big this year in "Winter's Bone," leading to a well deserved Oscar nomination. Before that, she was in the itty bitty sitcom "The Bill Engvall Show" and played a younger Charlize Theron in "The Burning Plain." Now she's set to make an even bigger splash with roles in "X-Men: First Class," the Sundance hit "Like Crazy" and Mel Gibson's upcoming mea culpa, "The Beaver." Her Aussie clone Abbie Cornish (28) already has a memorable name but she hasn't made it stick yet, despite a winning turn in last year's "Bright Star" and tabloid attention for dating Ryan Phillippe. That might change when she appears in the flashy "Sucker Punch" and Madonna's next directorial effort, "W.E."