After a short break from The Real Housewives of Salt Lake City, Mary Cosby is back and funnier than ever - even though she doesn't know it. That nonchalance is what makes her the unsung hero of the Bravo series and landed her a spot on Us Weekly's list of Reality Stars of the Year. Bravo viewers have also come full circle with the 52-year-old Cosby, who was one of RHOSLC's original cast members but took a brief hiatus (without attending the reunion or saying goodbye) after season 2 due to the controversy surrounding her church.