Vicki & Shannon's 'RHOC' Cancer Feud Explodes — Again!

The Real Housewives of Orange County are coming back with a vengeance!

At the end of season 10, veteran housewife Vicki Gunvalson, 53, was embroiled in a heated battle with her fellow stars — Shannon Beador, 51, Tamra Barney, 48, Heather Dubrow, 47, and Meghan Edmonds, 31 — over her involvement in her ex Brooks Ayers' cancer lies cover-up!

Now that all of the ladies are confirmed to be returning to the show, RadarOnline.com has exclusively learned that they are bringing last season's drama back with them!

"Shannon is not going to let Vicki live this down and she is also not going to let her back out of it," an on-set source exclusively told RadarOnline.com. "The two of them have been going at it and they have only taped together just a few times."

According to the source, "Shannon and the other girls want Vicki to take a lie detector test to prove that she did not know that Brooks was lying about having cancer."

So, did Gunvalson, who continues to maintain that she had no knowledge that she was being duped by Ayers, agree to their request?

"Vicki said, 'absolutely not,'' the source told Radar. "She was really insulted that they would even suggest that."

"She really wants everyone to just drop it so that they can all move onto someone else's bulls**t," the insider said, "but that is not happening."

Do you think that the rest of the cast should just move on from Vicki's ordeal? Tell us your thoughts in the comments below.