10. Kellan Lutz
Age: 28Nationality: AmericanMost notable role: Emmett (Twilight) A familiar face of the Twilight series (but don't hold it against him), Hollywood heart-throb Kellan Lutz has two potentially huge films lined up for 2014 in the shape of Tarzan and Hercules: The Legend Begins - both of which he'll be the lead in - along with a role in the big name The Expendables 3. Lutz, who often does his own stunts, is largely unknown, but has appeared in the likes of Heroes, the Nightmare of Elm Street remake and 90210. If his roles in Tarzan and Hercules are well-received though, he could see offers start to fly in next year; if not, he could turn to modelling, given that he's already been featured in ad campaigns for the likes of Calvin Klein.
9. Rooney Mara
Age: 28Nationality: AmericanMost notable role: Lisbeth (The Girl With the Dragon Tattoo) Despite being multi-award nominated (and winning) for her roles in both The Social Network and The Girl with the Dragon Tattoo, the enigmatic Rooney Mara will probably have a busy 2014, and will probably rise to new heights in the next couple of years. Mara is set to play the lead female in the Richard Curtis scripted Trash, as well as featuring in an all-star cast alongside the likes of Ryan Gosling, Natalie Portman, Cate Blanchett and Florence Welch (of the Machine fame), for a so-far-untitled Terrence Malick film. Then there's Carol, also alongside Cate Blanchett, and the follow up to The Girl With the Dragon Tattoo, The Girl Who Played With Fire, which might not be out until 2015.