Keira Knightley's Dress Once Split in Half Before Hitting a Red Carpet: 'Just Full-On Naked Body'

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Like many other A-list stars, Keira Knightley has a wardrobe malfunction story that's one for the books!

"I had an amazing one, years ago," Knightley tells PEOPLE in this week's issue when asked about her last major clothing mishap.

"I was wearing a Hervé Léger dress, one of those bandage-y dresses. I went to step out of the door and it split from the bottom to the top — my entire body was out," she recalls, noting that she was getting ready to attend the British Independent Film Awards.

"It was just full-on naked body," the actress, 36, says. "So it was a real moment of going, 'I think that dress was a bit too small.'"

Dave Hogan/Getty Keira Knightley at the British Independent Film Awards in 2005

Lucky for Knightley, she happened to have another Hervé Léger on-hand. "Fortunately, two of these dresses had been delivered. It was at a point where I was being followed around by many paparazzi. Luckily, I was in my flat, I was not out the front door, so nobody got a picture of the fact that this dress had split."