TUCSON, Ariz. -- They gulp chardonnay, eat cheeseburgers and fries, and stay up past 10 p.m. Sometimes they play dress up, and have pajama parties with champagne and strawberries. This is not your ordinary beauty pageant. The title of Mrs. America will go to one lucky housewife here tonight, and stick-thin, cello-playing, Vaseline-lipped, breast-taped babes need not apply. "We're all adults," Brenda Cullen -- Mrs. District of Columbia and the mother of six -- said over lunch. The 38-year-old petite blonde, who works as a personal trainer and is married to an internist/pediatrician in Washington, added, "You don't need a...