The “ladies” on this season of Celebrity Apprentice square off more often than two hockey players playing in the NHL.

This time around, the fighting occurs between the ferociously ill-tempered Star Jones, and fired Celebrity Apprentice contestant Lissa Rinna.

Last week Rinna found herself getting kicked off the reality show after she was appointed team leader on a children’s book project.

She heard the dreaded “You’re fired!” in the boardroom after she bombed the task and then threw her team under the bus.

Rinna singled out  Jones, accusing the former View co-host of trying to take full credit for writing the kids’ book at the center of the challenge.

Behind the scenes, the catty infighting got even uglier, with Jones claiming she has been targeted by Rinna’s “foul” tweets and emails—attacks so nasty that Jones has secured the services of  a few bigwig lawyers to go after Rinna.

According to E! News:

Jones has  gathered the series of tweets dating back months and a pile of emails from Rinna and turned them in to NBC’s legal department, complaining she is being “harassed,” according to a source familiar with the situation.

No comment yet from Rinna, who has since deleted the offending tweets, including some of Rinna posing with monster masks and featuring captions like “Great picture of me and Star Jones!!!! ” (Although Rinna has removed them, many have been archived online.)

Saying that such attacks were “evidence of [Rinna’s] instability,” Jones also got lawyers from The Trump Organization and from Mark Burnett Productions involved in her fight this week to shut Rinna up.

“Star declined to make the cause of concern public as to not take away from her purpose of doing the show, which is charity,” a rep for Jones tells E! News.

40 year old something women, bickering and fighting on national TV. Real classy ladies. Real classy.