Candy-colored fluff wrapped around a story so flimsy it can hardly support the gossamer-thin characterizations and simplistic moral. Small-town girl Donna Jensen (Gwyneth Paltrow) dreams of escaping her Silver Springs, Nev., trailer-park existence, but doesn't have a clue how. Then she spots motivational speaker Sally Weston (Candace Bergen) shilling for her autobiography, "My Life in the Sky," on TV. Sally parlayed a career as a stewardess into a life of fame and luxury, and Donna vows to do the same. After a brief stint at short-run carrier Sierra Airlines, whose stews are big-haired barbies in cocktail waitress get-ups, Donna and her even trashier friend, Christin...