See what Mary Cosby said about her husband Robert Sr.'s absence from The Real Housewives of Salt Lake City Season 5.

During a recent episode of RHOSLC Mary Cosby revealed her son Robert Jr. has been struggling with substance abuse.

Known for being almost completely unfiltered and even a little bit rude, “The Real Housewives of Salt Lake City” star Mary ...

Rihanna shows incredible support for Real Housewives of Salt Lake City star Mary Cosby amid her son's addiction struggles, ...

Mary Cosby revealed that Rihanna personally reached out after her son Robert Jr. admitted to drug use in an emotional RHOSLC ...