HOLLYWOOD, CA - MAY 10: Rob Kardashian arrives for the Blac Chyna birthday celebration and unveiling of her "Chymoji" Emoji Collection at Hard Rock Cafe, Hollywood, CA on May 10, 2016 in Hollywood, California. (Photo by Gabriel Olsen/WireImage)
HOLLYWOOD, CA - MAY 10: Rob Kardashian arrives for the Blac Chyna birthday celebration and unveiling of her "Chymoji" Emoji Collection at Hard Rock Cafe, Hollywood, CA on May 10, 2016 in Hollywood, California. (Photo by Gabriel Olsen/WireImage)