The actors on the set of the new Lars and the Real Girl film might have been performing alongside a rubber sex doll - but that didn't mean they didn't show her a little respect.

Emily Mortimer, who is starring alongside Ryan Gosling in the unusual film, which is out on March 21st, has revealed that all the cast remained professional throughout filming and gave the doll the courtesy she deserved.

"She was real state of the art," she said. "She had a tongue, and pubic hair!"

Mortimer went on to explain: "There was a real respect for her on set. No one was allowed to make jokes about her, or stick things up her nose.

"You can imagine the temptation to stick a cigarette in her mouth or put sunglasses on her or worse! Ryan was extremely careful with her, but I always worried that I was faking it with her."

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