Twitpics of the Week: Bow Wow Gives Glimpse of ‘Sweat’ Video Set

If there's one thing we've learned about our favorite pop stars, it's that they love their social media. This week, Bow Wow gave us a sneak peek onto the set of his 'Sweat' video, featuring Lil Wayne, with a black-and-white shot of himself and Birdman hard at work. Also this week, Demi Lovato showed off a goofy souvenir she got while traveling, and boy does she look cute in that sock monkey hat! Sara Bareilles shared a drunk Twitpic, which really had us laughing, Christina Perri hung out with the Beatles (really!) and JoJo made a joke about having a much older boyfriend -- obligatory photo included. See Twitpics of your favorite stars from this week!