In a new E! exclusive sneak peek of Bravo's "The Real Housewives of Orange County," Shannon Beador accuses Heather Dubrow of breaking "girl code." Dubrow confronts Beador and Vicki Gunvalson, and the ladies get into a heated exchange before dinner on their vacation in Tahiti.

"Yeah, I heard that you said that I was like a horrible person," Dubrow says bluntly.

"Oh Jesus, are you kidding me?" Beador says. "I never said that!"

"Tamra told me in private that she and Vicki and Shannon had this conversation about Jimmy's ex," Dubrow explains in an on-camera interview, "and she made it sound like Shannon was being very negative towards me."

"That's not what I said," Tamra Judge jumps in, defending herself, Beador and Gunvalson.

The clip cuts to a previous scene where Gunvalson asks about Dubrow's friendship with both Meghan King Edmonds and her husband's ex-wife Allison Jayne Raski.

"You know what? It's a girl code," Beador says in the previous clip. "You don't hang out with the new wife when you're good friends with the other."

Jumping back to the dinner table conversation, Beador tries to explain to Dubrow that she didn't mean anything negative by her comment, then calls out Judge for gossiping.

"Jesus Christ, you know what at this point Tamra," she says, "honestly, can I not have a fun night with you?"

Watch the full clip below.