People.com Halloween Party

They Wore What?! Major Star Movie Costumes

It's not Halloween for these celebs, who've dressed up as pregnant prostitutes, electrified villains and '70s stunners for their upcoming roles

CHRIS HEMSWORTH

Movie: Thor: The Dark World
Dear Thor, um, Chris: No one wears armor quite like you do. And your ability to rock a cape without looking like a cheesy magician is impressive. But since you obviously worked hard sculpting your body into superhero shape to battle enemies in this sequel, why not show off the muscles a little more – specifically those bulging arms? Even medieval gods need a break from heavy-metal couture sometimes.