Cindy Crawford is used to taking risks -- remember the magazine cover where she was shaving k.d. lang's face? Or the 1994 ad she and then-husband Richard Gere took out in the London Times, to announce that neither was gay? Well, now, the onetime Revlon spokeswoman, 35, is taking a bath, in front of everybody. The scene is featured in her new film, opening Friday, "The Simian Line," also starring Harry Connick Jr., Lynn Redgrave and William Hurt. (The title refers to the rare circumstance in humans in which a single line traverses the palm horizontally from one side to the other.) "She was actually a very good sport about it," the film's writer-producer-director, Linda Yellen, told PEOPLE.com about Crawford's performance, which is sure to cause a splash. "The scene was shot using a decorative, fake tub set up in the middle of a large room made to look like a luxurious bathroom." Because there were no pipes leading into the tub, "production assistants had to carry in buckets of water, so it was always cold." Besides a closed set, said Yellen, Crawford also requested -- and got -- "warmer water, more bubbles in the bath and larger towels. It was good that the scene came at the end of the shoot, so Cindy had a little more time to get to trust her director and her butt naked costar, Jamey Sheridan." Pass the soap.