Robert Cosby Jr., Mary Cosby’s Son, Dies at 23 in Utah

Robert Cosby Jr., 23, the son of Real Housewives of Salt Lake City star Mary Cosby, died in Utah after a reported arrest/medical emergency tied to a possible overdose. Mary Cosby publicly confirmed the death and fellow RHOSLC alum Andy Cohen offered condolences. Cosby Jr. had spoken about his substance-abuse struggles on the Bravo show and had pleaded guilty in 2025 to eight charges including assault and trespassing, later being released after a two-month sentence. The article also notes crisis resources for those in distress.