RHOSLC's Mary Cosby Savagely Shades Castmate Heather Gay During Watch What Happens Live Appearance

Mary Cosby is not holding back! During her recent appearance on Watch What Happens Live Tuesday, The Real Housewives of Salt Lake City star let her opinions be known as she and fellow guest, Ziwe Fumudoh, played a game of "Versace or Hibachi." When asked to rate fellow Housewives' outfits, calling them Versace if they were a hit or throwing them on the Hibachi grill if they were a dud, Cosby -- who just last week slammed castmate Heather Gay's necklace choice during Lisa Barlow's Après-Ski part...