Robert Cosby Jr., the son of Bravo star Mary Cosby, has died. According to a report published on Wednesday by TMZ, the son of the Real Housewives of Salt Lake City mainstay passed away on Monday evening in Utah. He was just 23 years old. So, so sad. Per that news outlet, cops in Salt Lake City were called to a residence there on Monday night for what is being described by insiders as a "full arrest/medical emergency." Both the fire department and paramedics were dispatched for the call, which the news outlet claims was reported at the time as a possible overdose. Oh, no.