Kyle Richards of “The Real Housewives of Beverly Hills” is in the middle of a cheating scandal involving husband Mauricio Umansky. The 44-year-old socialite and her husband have been married 17 years and have three daughters together. On the show, they seem to be one of the most stable couples. However, reports have surfaced that Umansky, 42, cheated on his reality star wife with a female escort and a transsexual prostitute.

The prostitute, known as Mistress Terri, was interviewed by Star magazine, and stated that she and the escort took Umansky to their home after picking him up at Roosevelt Hotel in Hollywood, Calif. The two run a sex business out of their apartment in Los Angeles, Calif.

Mistress Terri, whose real name is Toni Newman, states, “We had many high-end clients between 2003 and 2005, Mauricio being one of them.” Newman is 50 years old, and the female escort, Mistress Carmen, is 29.

“Mauricio went for the threesome option and in a kinky twist asked both of them to dress up as police officers,” Newman continued.

The accusations have reportedly been causing tension between the show’s co-stars. During filming for the fourth season, Lisa Vanderpump and Brandi Glandville asked Richards, who is Paris Hilton’s aunt, and her husband about the rumors. They then proceeded to ask Umansky separately, show insiders told RadarOnline.

Kyle was “so upset and disgusted after the confrontation that she called producers of the show and told them she wanted out.” Richards was convinced to remain on the hit show, however.

Umansky denies the allegations, stating they are “utterly ridiculous.”