Twenty-eight-year-old Maggie Fuller relies on her looks and size zero body to flirt her way through life while working dozens of dead-end jobs and dreaming of stardom. Her older, larger sister, Rose, relies on her intelligence and is an accomplished attorney at a large Philadelphia firm. The only things these two seem to have in common is their shared history, a loathing for their "stepmonster," Sydelle, size six feet and a passion for luxurious shoes. When Maggie is evicted from her apartment and loses her job, Rose takes her in and tries to endure her closet raids and endless insults. But her patience abruptly ends when Maggie crosses a line so sacred that Rose kicks Maggie out and all but terminates their relationship.