Celebrity | celebrity 12 Famous Open Relationships Charlie Sheen is the latest, the wackiest, but not the first By Evann Gastaldo Posted Mar 3, 2011 10:29 AM CST Copied In this Jan. 28, 2009 file photo, actor Charlie Sheen is interviewed at Universal CityWalk in Los Angeles. (AP Photo/Chris Pizzello, File) See 4 more photos Charlie Sheen may be the craziest celebrity ever to have a relationship with multiple women simultaneously, but he's certainly not the only celebrity to do so. The Daily Beast rounds up a dozen: Hugh Hefner: The Playboy founder's relationship record? Seven women at once. (He also, of course, dated identical twins.) Tilda Swinton: She's had a relationship with a Scottish artist for more than 10 years—they have twins together—but she's also been seeing a much-younger artist since 2004. They all "travel the world together," she said in 2008. "We are all a family." Simone de Beauvoir: The author of The Second Sex, widely credited with founding the women's movement, was in an open relationship with Jean-Paul Sartre for 51 years. Sartre once said it was "a good idea for us also to experience contingent love affairs." Andrei Kirilenko: The NBA star's wife allows him to sleep with another woman once per year. Mo'Nique: The Oscar-winning actress has said that her husband is allowed to have sex with another woman: "That's not a deal-breaker." Click for the complete list. Read These Next Rubio says the fate of Iran's conversion facility is what matters. Her blood isn't compatible with anyone else's. Sienna proves herself to be a very, very good dog. Three hikers jumped into a waterfall and never resurfaced. See 4 more photos Report an error