Rob Kardashian joins his girlfriend, Blac Chyna during sexy photoshoot section

Rob was spotted on the set of his new girlfriend, Blac Chyna's sexy photoshoot in a desert for 138 Water by DRE. Blac Chyna showcased her incredible curves in a skimpy swimwear as she posed ensuring her massive butts was the center of attention. Rob was there all through the shoot to cheer her up. More photos after the cut...