Rob Kardashian returns to social media to celebrate sister Khloé's birthday

Rob Kardashian, 36, returned to social media for the first time in four months on June 27 to celebrate his sister Khloé Kardashian's 39th birthday.

Rob Kardashian News, Pictures, and Videos - E! Online

Khloe Kardashian, More Celebrate Rob Kardashian's Birthday: Pics

Kim Kardashian and Sister Khloé Celebrate Kylie Jenner's 26th Birthday

Rob Kardashian pens a heartfelt tribute to Khloe in celebration of her 39th birthday

Rob Kardashian Is Back Posing In Photos And Posting On Social Media

Khloé Kardashian Shares Super-Rare Photo With Beloved Bro Rob Following Birthday Celebration! - Perez Hilton

Rob Kardashian pens a heartfelt tribute to Khloe in celebration of her 39th birthday

Rob Kardashian Turns 36: See Khloe Kardashian's Heartfelt Message For Him

Kim Kardashian, Khloé Kardashian Celebrate Late Dad Robert Sr.'s Birthday

Rob Kardashian returns to social media after FOUR years for sister Khloe's - Capital XTRA

Rob Kardashian Wishes Khloe Happy Birthday, First Post In Months