Who is 'Transformers 3' Star, Rosie Huntington-Whiteley?

Newcomer Rosie Huntington-Whiteley, 24, who stars in the third installment of the new Transformers film, Dark of the Moon, has got some pretty sexy shoes to fill, after taking over for Megan Fox, 25, in the popular action trilogy.

Huntington-Whiteley, a former model for Victoria's Secret, was far from intimidated by the tall order, however. Even though she hasn't had an acting career to speak of, she worked with Transformers director Michael Bay on a commercial for the lingerie company, after which she was cast for the role of Carly Miller. It's not for nothing that MTV named her as one of their "Breakout Stars to Watch for in 2011" and that she won the honor of "Female Star of Tomorrow" at this year's CinemaCon awards.

The British beauty was ready to shrug off those modeling frills for some more vigorous work. "You had to leave all sense of girliness at the door," she told USA Today about the Transformers shoot, which has a predominantly male cast. "I'm a bit of a tomboy anyway," she assured. "It's not glamorous. You had to become one of the boys, for sure."

Though she's new to the acting scene, Huntington-Whiteley, who was, considering her Victoria's Secret career, ironically voted "Miss Big Mouth" as a schoolgirl in Devon, has had her share of sexy leading men in her life. In 2009, she was briefly romantically linked to Unfaithful's Oliver Martinez, who is now dating Halle Berry. She has been with English actor Jason Statham of The Mechanic since April 2010.

Transformers: Dark of the Moon, also starring Shia LaBeouf, Patrick Dempsey, Ken Jeong and Frances McDormand, will hit theaters on June 29.