Keira Knightley, "Atonement"
Keira Knightley's famous green dress in "Atonement" had several backups because it kept ripping during that famous library scene. "I probably broke them all," Knightley said. "You can't have a sex scene in a dress like that! It was all laser-cut in the front, so literally, if you touched it [it ripped]. They had so many [backups], and the tops had to keep being resewn and redone."
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