Keria Knightly - Princess Leia
Bradley Cooper - Hans Solo
Chris Hemsworth - Luke Skywalker
Kate Upton or Jennifer Lawrence as Mrs Perdogg
Fun trivia, Keira Knightley played the fake queen (Sabe) in The Phantom Menace. Whenever you see the queen in full makeup along with Padme, it is Knightley playing the fake queen. She was cast specifically because of her resemblance to Natalie Portman.
Definitely Kate Upton...
Good Luck...
Laz is on the hunt