Keira Knightley most promising teen star

She might be playing Queen Guinevere in the upcoming epic movie King Arthur, but her fans have already bestowed her with the title of the world’s most promising teen star. According to the Herald Sun, the 19-year-old British actress’s soaring popularity can be gauged by the fact that almost 20,000 fans rate her ahead of Scarlett Johansson. Her brief appearance at the London premiere of King Arthur drew thousands of fans. Knightley arrived with her Irish boyfriend, model Jamie Dornan, and the film’s other stars — Clive Owen, Ray Winstone and Welsh actor Ioan Gruffudd.