The original Real Housewives -- the ones from Orange County -- have wrapped up their eighth season. But judging from a sneak peek at the three-part reunion special (Us Weekly has the first look), the ladies have just begun to fight! Long-suffering Andy Cohen sits down to referee the proceedings between Vicki Gunvalson, Tamra Barney, Gretchen Rossi, Alexis Bellino, Heather Dubrow and newcomer Lydia McLaughlin as the women hash out season eight's many layers of betrayals, shifted alliances and bruised feelings.

Joining the sextet on the couches: Returning housewife Lauri Peterson, who stirred up major trouble by insinuating that Gunvalson had been involved in a threesome, plus Gunvalson's daughter Briana, who trades insults with Gunvalson's on-and-off boyfriend Brooks Ayers.

In this exclusive first-look preview, Briana confronts Brooks ("he talked to me about his ---- size!"), Gunvalson rehashes Threesomegate, and Rossi dissolves into sobs as the women question the motives behind her engagement to Slade Smiley.

Watch the explosive preview now. The Real Housewives of Orange County Reunion airs Monday, August 12 at 8 p.m. EST (Part One), with parts two and three airing over the following two Mondays.