Forget about polygamy, Big Love star Melora Walters is shedding a spouse – the actress has filed for divorce from her husband of two years, Alexander Vendler, Breaking Celebrity News has learned.

According to court documents, Walters, who plays Bill Paxton’s deranged sister-in-law on HBO’s hit show about polygamy signed a prenuptial agreement with Vendler in June 2008.

Walters is citing irreconcilable differences as the basis for the divorce and asking the court to terminate its ability to award spousal support to Vendler.