Rob Kardashian Makes Comeback To Celebrate Khloe Kardashian’s Birthday: ‘Back Baby’

Rob Kardashian is back and looking better than ever! The 33-year-old took to Instagram to celebrate his big sister Khloé Kardashian’s 36th birthday with snaps from her over-the-top party. The famously private reality star has kept a pretty low profile on social media for quite some time, but he returned by sharing rare candid photos of himself with sisters Khloe, Kylie Jenner, Kendall Jenner and Kourtney Kardashian