She said: "She's the only contestant in the history of the show to actually gain weight. No, come on, come on. She gained like 30 pounds a week, I swear to God, it was fantastic. She's like the white Precious."
However, Kathy's controversial comments were met with loud boos from the audience, which was predominantly made up of US servicemen and women, something which the young star says "speaks volumes".
Bristol has since hit back at the insults, telling Fox News: "The audience's reaction to this 'comedian' spoke volumes, and the decent people I know would probably have booed her, too. I hope people didn't have to pay money to hear her negativity and criticisms."