It sounds like Rob Kardashian really is on a serious mission to get healthier! The 28-year-old Keeping Up With the Kardashians star returned to Instagram earlier this week looking slim and happy after nearly disappearing from the public eye. Rob's BFF and DASH Dolls star Malika Haqq told E! said Rob is doing well and has been working out and taking care of himself. She added that as for everyone when Rob is ready to be seen he posts and when he is not, he should be left alone.