Hugh Hefner‘s wife Kimberly going for broke in uber-nasty divorce!

The estranged wife of Viagra enhanced octogenarian Playboy Hugh Hefner wants more than $5.2 million in a divorce from the  mogul, plus half of the couple’s Mapleton estate, next to famed Playboy Mansion, which sold last month for more than $10 million.

The former Kimberly Conrad has been married to Hef since 1989 and have two boys, the youngest turning 18 in September.

The estranged couple who signed a pre-nup back in 1989 have lived on separate but adjacent properties so they could "maintain a family relationship" according to the complaint filed in LA County Superior Court.

Conrad also seeks an additional $40,000 in child support for each month the couple stays married after September. 

Conrad previously filed for divorce in 1998 but withdrew the request after Hefner said he did not want to divorce.

"I was surprised and saddened to learn of press reports that Kimberly Hefner from whom I have been separated over 10 years, has apparently filed suit claiming that I owe her $5 million," Hefner said before she announced divorce proceedings.

According to the complaint Kimberly and Hef’s two sons had lived in the Mapleton estate prior to the sale.