Tamra and Alexis face each other for the first time since the debacle at Tamra's party. Meanwhile, Heather and Gretchen butt heads while planning Tamra's bachelorette party trip to Mexico. Then, just as the ladies head south of the border, O.C. housewife Lauri Peterson tells Gretchen shocking allegations about Vicki's past. Will Gretchen bite her tongue or turn this fiesta into a fight?

Sparks fly when Alexis and Heather finally come face-to-face to settle their differences. Briana and Ryan share an emotional goodbye as he prepares for deployment. Lydia throws a sexy salsa dance party, but finds herself in the middle of big drama when Slade throws a snarky comment her way. Vicki is stunned by the arrival of an unexpected dance partner, while rumors swirl about her love life. Things get ugly when Gretchen threatens to back out of Tamra's wedding dress shopping excursion when she finds out Alexis will be there.