Maloof's husband, plastic surgeon Dr. Paul Nassif, filed for separation from the reality TV personality on Monday, according to court papers obtained by TheWrap.
The papers, filed in Los Angeles Superior Court, cite irreconcilable differences as the reason for the separation.
Nassif and businesswoman Maloof have been married since May 2002. They have three sons: Gavin, 9, and six-year-old twins Christian and Collin.
The papers make note of a prenuptial agreement. (Maloof is one of the owners of Maloof Companies, whose holdings include the Palms Casino and Resort in Las Vegas and the Sacramento Kings basketball team.)
Separate and community property held by the couple will be determined in an amended petition. According to the filing, Nassif is asking that the court not be allowed to award spousal support to Maloof.
A representative for Maloof has not yet responded to TheWrap's request for comment.
Season 3 of "The Real Housewives of Beverly Hills" will premiere in September.
