Stars Celebrate Halloween in Costume!
Halloween isn't officially until tomorrow, but stars started celebrating early with parties over the weekend. Emma Roberts channelled her aunt Julia in Pretty Woman, while Rosie Huntington-Whiteley chose a rather sexy ensemble. Hilary Duff painted a Day of the Dead mask on her face, and Kim Kardashian took a cue from Splash and dressed as a mermaid. There were even more celebrities in costumes, so click through to see them all as they got a head start on the spooky holiday!