"We knew we'd have to do the show in drag," Jason Alexander said at the VIP party after the "What a Pair!" program at the Broad Stage in Santa Monica. He and Steven Weber had just performed as Jacie and Steffie in the until-this-year all-female revue to benefit breast cancer research at the John Wayne Cancer Institute. Though the cause is no joking matter, guests such as Kim Raver of "24" and "Lipstick Jungle" said they enjoyed the show's humor most of all. Jo Levi DiSante said she originated the fundraiser to cheer up her mother and sister, both of whom were diagnosed with breast cancer and undergoing chemotherapy. Although conceived as an amateur production of female duets (hence the name: "What a Pair!"), she discovered there was no shortage of celebrities willing to participate. Guests also included Margie Petersen, whose foundation last year contributed $15 million to the John Wayne Cancer Institute and St. John's Health Center. -- Ellen Olivier Steven Weber, left, and Jason Alexander perform "The Beauty That Drives Men Mad" from "Sugar."