Luann de Lesseps sued by his ex-husband and their children

Luann de Lesseps, Real Housewives of New York faces a lawsuit brought against her by her ex-husband, Count Alexandre de Lesseps, and their two grown children, Noel and Victoria.

stems from the terms of the divorce of the former couple in 2009, after 16 years of marriage.

According to their divorce regulations, the 53-year-old reality star was given the family's mansion in Bridgehampton, New York. Alexander alleges that the stipulation of this agreement was that Luann was supposed to constitute a trust, for the benefit of their two children, using half of the interest of the estate.

Luann's ex-husband alleges in court documents, obtained by ET, that she failed to establish the agreed confidence. Instead, he claims to have sold the mansion for $ 8 million and used the money to buy a $ 3.1 million home in Sag Harbor, New York.

The lawsuit alleges that, according to the terms of their divorce, Luann was allowed to sell their "matrimonial home" and reinvest that money in another home, as long as their children remained the owners, in the form of their trust, of their property. 39, a half interest in the new property.

In addition, if the matrimonial home was sold more than the price of the new property, one-half of the profits from the sale should be recorded in the trust. The lawsuit states that none of these conditions have been met.

The court documents further claim that Luann "now threatens to enumerate, sell or mortgage" the property of Sag Harbor to buy a new home in the state of New York without to provide money to She therefore asked the court to prevent Luann from selling Sag Harbor's house and order him to abide by his original divorce agreement, which would include the lawsuit occurred less than two weeks after that Luann and Alexander met with their family for a July 4th celebration at his home in Sag Harbor.

The RHONY star shared a picture of their meeting with Instagram, where the former couple seemed to be in a good mood.

"The most beautiful meeting of all time! Wonderful to spend the weekend with the kids and The Count ". "Also counting my blessings! Celebrating 6 months of sobriety! Happy 4th of July, everyone!"

This lawsuit is also the latest legal speed bender for the reality star, who had a difficult year, including the arrest for disorderly intoxication in December. Watch the video below to learn more about his recent challenges.