With celebs, sometimes just two can be a crowd! Pamela Anderson and Shannen Doherty both headlined the grand opening of gentlemen’s club Sapphire New York on April 27, but despite the small space, the two stars never spoke. While the former Baywatch babe sipped champagne with her boyfriend Jamie Padgett in a VIP booth, the 90210 actress sat with her pal, Marquee co-owner Noah Tepperberg, on the opposite side of the room. “It was odd that a star like Shannen wouldn’t sit in the VIP area. She was on the ground floor with all the other guests,” a fellow partygoer tells In Touch. Perhaps both women are sour over their mutual ex-husband, Rick Salomon. Pamela famously split from Paris Hilton’s sex tape partner after two months of marriage in December 2007, and the brunet beauty was briefly wed to Rick in 2002. “I was madly in love. When it ended, it was a heart-crushing thing,” Shannen recently said of her former hubby. Both stars left through separate exits at around 11 p.m.