NHILTON_14.jpgNicky Hilton NHILTON_11.jpgNicky Hilton - who's been lookin' a lot thinner lately - was spotted shopping for shoes at Christian Louboutin yesterday. (We're guessing not for a Halloween costume, though!) Nicky's already dressed up as a nurse for the Playboy Mansion party, but what will she be come tomorrow? We'll see!