Self-PortraitistsBest Celebrity Twitter Pictures: Ke$ha, Paris Hilton & More (PHOTOS)12.30.12Self-PortraitistsBest Celebrity Twitter Pictures: Ke$ha, Paris Hilton & More (PHOTOS)Ke$ha parties with a bunny, Paris Hilton salutes our troops, and more celebrity portraiture found on Twitter this week.12.30.12 9:45 AM ETKe$ha parties with an oversize rabbit on the set of a new music video, Jessica Simpson shows off her pregnancy glow, and Paris Hilton parties with the armed forces. Plus, more celebrity Twitter pictures from the week. Ke$haWhy Ke$ha is in what appears to be a party store, digging her talons into an enormous, suited-up bunny, is beyond us—but at least she gave us a hint: “WTF is going on??? Will have to wait to find out #C’MON music video,” she wrote. Jessica SimpsonJessica Simpson’s brand-spanking-new pregnancy glow is showing up in full force in this photo of her and husband Eric Johnson on vacation in Hawaii. “Aloha…” the singer wrote. Dean NorrisOn Breaking Bad, Dean Norris (as Walter White’s DEA agent brother-in-law Hank) has had some pretty significant revelations while sitting on the toilet. It looks like another may be on its way in this photo of Norris with some “Better Call Saul!” matches. “Twitter Shitter pic @mrbobodenkirk irony. Light a courtesy match, realize it’s from ‘Better Call Saul’ matchbook,” Norris wrote. Mariah CareyMariah Carey and Nick Cannon took enough photos of their kids over Christmas to last until 2013’s holidays roll around. Here’s one of the pair, plus twins Monroe and Morocco, having fun in the snow. “MERRY CHRISTMAS from the Carey-Cannons!! Pictures from our most festive Christmas yet at dembabies.com!” the singer wrote. Justin BieberJudging from the 2,221 comments and 34,100 “likes” on this photo of Justin Bieber and Scooter Braun just after completing an acoustic version of his Believe album, fans are pretty rabidly excited. “Looks like @justinbieber just finished the #BelieveAcoustic album,” Braun wrote. RihannaRihanna, who is both a native of Barbados and an ambassador for her hometown there, gave her Twitter followers an early look at photos the country will be using for its new travel campaign. “Sneak peek,” she wrote. Sarah SilvermanHer Ronald McDonald–red hair is only the second-most attention-grabbing thing in this photo (Hi, monkey!), but that’s what Sarah Silverman captioned it anyway: “HAIR,” she wrote. Channing TatumParents-to-be Channing Tatum and Jenna Dewan-Tatum smiled merrily for the cameras with their hands intertwined over Jenna’s belly. “Merry Christmas!!” Channing wrote. Evan Rachel WoodEvan Rachel Wood offered fans a stunning look at her new spread in Glamour, writing, “New pic J” John StamosAn Uncle Jesse road trip? John Stamos posted a photo of himself and a friend ready to head out and wrote, “Roll up, roll up for the mystery tour—road trip!!” Paris HiltonParis Hilton and two lucky Marines mingled at a party on Friday and posed for a quick snap together. “Love the US Troops!” Hilton wrote.