LOS ANGELES – Jillian Michaels has been sued for alleged false advertising by a woman who claims she was duped into buying a diet supplement endorsed by the celebrity trainer. Christie Christensen of Lake Elsinore, Calif., is seeking class-action status for the case she filed Tuesday in Los Angeles. Michaels is a hard-charging, no-nonsense trainer best-known as one of the stars of NBC's hit reality show, "The Biggest Loser." Christensen's lawsuit claims she bought a product called "Jillian Michaels Maximum Strength Calorie Control" last month and that it has failed to lessen her appetite or cause her to lose weight...