Charlize Theron touched down at LAX last night in another of her cute, stylish travel outfits. Charlize is currently on a break between projects, but there is exciting casting news in the works for her Snow White and the Huntsman. Viggo Mortensen dropped out of the project last month, and now there are talks that Hugh Jackman may play the huntsman. Kristen Stewart will be the Snow White to Charlize's evil queen when filming wraps on Breaking Dawn soon. First up, though, Kristen has a milestone to celebrate. Tomorrow is her 21st birthday, and we're getting in the spirit by rounding up her sexiest pictures ever.