Credit: Todd Williamson/

The Real Housewives of Orange County star Tamra Barney is denying her estranged husband Simon Barney's divorce paper claims that she committed acts of "infidelity."

"Thanks to everyone who understands and supports me," she wrote on her Facebook page. "For the record, all accusations are false."

Her costar Vicki Gunvalson tells that she is still shocked by the split.

"Personally, I think if Tamra spoke to a man Simon would call it cheating," she said in an email. "Tamra has 3 little kids. That's all I care about is making sure they get through all of this."

A rep for Bravo told Us Thursday that Barney, 42, "is going to share her story first on Bravo's Watch What Happens Show hosted by Andy Cohen, airing next Thursday at midnight."