The 'Bella' of the ball, when Stewart made her first red carpet appearance for Twilight in Dec. 2008 at the film's London premiere, she sported a one-shoulder, prom-like dress befit her 18 years of age. Fast-forward three years, and the little known star has become one of Hollywood's highest-paid actresses, and regularly dons couture like the Roberto Cavalli gown she wore to the U.K. premiere of Breaking Dawn – Part 1.