LaBeouf on Whiteley's Transformation: 'She is Incredible'

"Transformers" star Shia LaBeouf admits he once had his doubts about his Victoria's Secret model co-star Rosie Huntington-Whiteley's acting skills, but tells "Extra," "She is incredible."

LaBeouf, Huntington-Whiteley and Josh Duhamel sat down with "Extra's" Steve Santagati in Moscow to talk about the film's grueling 8-month shooting schedule, and they claimed no one was spared! Rosie said, "Last night we went for drinks, he [Shia] said, 'Cheers, you proved everyone wrong.'" The supermodel-turned-actress showed she can hang with the boys by performing action-packed stunts. "I felt dirty and sweaty. If you think I looked good, then thank you!"

Josh Duhamel sprained both ankles on the same day, claiming, "I'm the worst soldier in the history of moviemaking," and explained, "One happened before lunch and one happened after lunch."

Santagati tried to push the interview with Shia a bit longer, and the actor turned to his publicist, commenting, "You see her with the leather strap?" Steve replied, "She actually had a stun gun and said 'When your time is up I will stun gun your face." LaBeouf, looked surprised and chuckled.

See the robot aliens when "Transformers: Dark of the Moon" rolls into theaters on June 29.