Hef, Crystal Dress Up as Miley Cyrus, Robin Thicke

Here's an image you won't be able to get out of your head for the foreseeable future: Crystal Harris twerking all over her hubby, Hugh Hefner. Hef recently tweeted two pictures of himself and Harris at the Playboy Mansion Halloween party, dressed as Miley Cyrus and Robin Thicke from their infamous MTV Video Music Awards performance. At the same party, Paris Hilton was also dressed as Miley, though in the teddy-bear version of her VMAs ensemble, the LA Times reports. (More Hugh Hefner stories.)