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EXCLUSIVE: Shia LaBeouf Cozying Up To New Transformers 3 Co-star

Transformers 3 hero Shia LaBeouf is getting very close to his gorgeous new costar, Rosie Huntington-Whiteley, while filming the third installment of the action saga, sources on the set have exclusively revealed to RadarOnline.com.

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The pair has been hanging out in each other’s trailers for hours on end and spotted holding hands in between takes ever since the action sequel began filming in Los Angeles three weeks ago. On one recent memorable occasion, LaBeouf answered the door to Rosie’s trailer without his shirt on.

“Shia and Rosie are very friendly on set and laughing and joking with each other,” another eye witness told RadarOnline.com. Director Michael Bay has also been giving her extra-special attention, affectionately moving her hair with his hand during one of the shots, while at other times personally advising the new actress in her movie debut.

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“She looked a little nervous at times, but Shia was always reassuring her that she was doing a good job,” said the insider.

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LaBeouf, 23, has been dating British actress Carey Mulligan, 24, since last summer. The couple recently returned from a romantic trip to the Cannes Film Festival, where they were promoting their upcoming Wall Street sequel, Money Never Sleeps, in which they play on-screen lovers. 

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However, sources on the Transformers 3 set say Mulligan hasn’t been spotted visiting her boyfriend.

Victoria’s Secret beauty Huntington-Whiteley, 23, joined the cast of the Michael Bay blockbuster after former love interest Megan Fox was give the boot for criticizing the franchise’s director.

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This isn’t the first time LaBeouf has been tied to his Transformers’ leading lady off-screen as well as on. There were rampant rumors that he and Megan Fox were dating, but both denied a real-life relationship and Fox is now engaged to longtime boyfriend Brian Austin Green.

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