Jennifer Aniston was left panicked when she was locked in a car trunk.

The 40-year-old actress admits she was horrified when crew on her latest movie 'The Bounty Hunter' briefly left the set while she was squashed into the cramped space for a lengthy amount of time.

She told US talk show host David Letterman: "They left me in that trunk once. They were like, 'Are you going to be OK? We're going to shut you in the trunk?' And I said it was fine, and every couple of takes they'd open the door and give me a sip of water and a cracker.

"And there was this one moment where they were overly discussing a shot and all of a sudden all the voices faded and they'd gone over to the monitors - there's one camera in the trunk, I don't know what they were looking at but I had a little panic."

Jennifer has been repeatedly romantically linked to her 'The Bounty Hunter' co-star Gerard Butler, but has refused to confirm their relationship.

However, in the interview, she praised the Scottish actor, describing him as "such a nice guy".