Rob Kardashian is back after years out of the spotlight and he's slimmer than ever in years! The 32-year-old "Keeping Up With The Kardashian" star shocked fans when he posted a shot showing off his massive weight loss with his mom, Kris Jenner, on Halloween. Now, he's posing again and this time, it's with his sisters, Kylie and Kendall Jenner! The Kylie Cosmetics founder and her supermodel sister both shared the snap on their instagram Friday. Sitting next to their brother following Kendall's Halloween-themed birthday party on Thursday, the trio are seen cuddled up together for the adorable family photo.