07/31/2001 AT 01:00 PM EDT
Co-hosted by "Sex and the City" stars Kristin Davis and her TV husband Kyle MacLachlan, the fourth annual "Super Saturday" sale to benefit the Ovarian Cancer Research Fund -- formerly headed by the late fashion editor Liz Tilberis (who died of the disease in 1999) -- attracted the Hamptons' well-heeled last weekend, reports PEOPLE. Saturday's lush afternoon event featured carnival rides for kids and performances by the up-and-coming young girl group "PYT" and Patti Labelle, while the attendance list included "Wings" actor Steven Weber, models Christie Turlington and Stephanie Seymour, Martha Stewart and sister "Sex" star Cynthia Nixon. Designer Donna Karan and her friend Tilberis began the sale in 1998, and this year's offerings included designs by Karan, Cynthia Rowley, Betsey Johnson, Vera Wang, Burberry, Ralph Lauren, Kate Spade and others. MacLachlan, 42, who arrived with girlfriend Desiree Gruber and their Jack Russell terrier Mookie, told PEOPLE, "My mother died of complications from ovarian cancer in 1986, and a few years ago I became personally involved through Liz Tilberis and Donna Karan. They had organized this event, and I thought this would be great way to lend a little bit of whatever luster we have towards something that means something."