LAS VEGAS, NV - MARCH 16: (EXCLUSIVE COVERAGE) Rob Kardashian Celebrates his birthday at 1 Oak on March 16, 2012 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LAS VEGAS, NV - MARCH 16: (EXCLUSIVE COVERAGE) Rob Kardashian Celebrates his birthday at 1 Oak on March 16, 2012 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)