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Tamra Judge Explodes at Gretchen Rossi

The former frenemies are involved in a social media war of words.

By Sarv Kreindler May 8, 2014, 4:01 PM ET

As Tamra Judge goes through her brutal custody battle for her kids with ex-husband Simon, there is one notorious frenemy she knows she doesn't have in her corner. Her former The Real Housewives of Orange County castmate Gretchen Rossi told Life & Style that she thinks Tamra "cares more about RHOC than taking care of her kids."

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But Tamra has hit back in an explosive Instagram post, calling Gretchen "a nasty bi--- who will do anything to stay relevant!" "GO AWAY!" Tamra wrote. "You know nothing about my life or my kids. I pray that one day you have the happiness and beautiful children I have. I pray that your children are not hurt by divorce and their names are not [dragged] through the mud by people like you."

Never one to take things lying down, Gretchen has responded on Twitter, denying that she ever said anything about Tamra's kids. "I've never talked about her kids. She's the one who has talked about Slade & his relationship with his son," she responded to a Tweeter, calling Tamra a hypocrite. "Let your past record speak for itself, no matter what the accusations. I don't speak about things I don't know about, I only speak about my experiences and how someone has treated me," she wrote later.

On Monday's Watch What Happens Live, Tamra opened up about how difficult the past few months have been for her as she goes through her very public and combative custody battle, calling it "one of the most devastating times of my life."

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Are you Team Tamra or Team Gretchen on this one? Sound off below.