We got another great glimpse into the world of celebrities through social media this week, and whether they were gearing up for the holidays or reporting to work on set, there were lots of fun snaps to pore over. Stars like Miley Cyrus and Usher shared photos with their dogs, and Kim Kardashian showed off her new hairstyle. Judd Apatow made a TV talk-show stop with Tom Cruise, and Gwyneth Paltrow made pasta during an appearance on Jamie Oliver's cooking program. Drew Barrymore joined in on the backstage action, while Harry Styles got inked in LA. Bar Refaeli reported from Greenland, and Nicole Richie and Joel Madden shared a sweet snap as they marked their second wedding anniversary.