Stella McCartney's Resort collection made its debut at a soirée the designer hosted in absentia at her L.A. store on Friday night in honor of World Environment Day. Cameron Diaz sported a white party dress with black floral beading (minus the belt it was worn with in McCartney's New York showroom), a look that hewed to the saucier side of the designer's sexy/sportif approach. Also in the first camp: Savile Row-sharp tuxedos and a guipure lace jumpsuit (McCartney herself wore that number to the Met gala), along with a pair of floral dresses, one in acid-bright sequins and the other in a naive scribble print. Nautically inspired striped sweater dresses, slouchy drawstring-waist jackets, and a romper or two represented the sportier side of things. Proving that the designer practices what she preaches, 15 percent of the line is partially or 100 percent organic.