Rule No. 1 of Real Housewives: always be ready to provide the receipts!. Vicki Gunvalson did just that when ET sat down with the OG of the OC and her The Real Housewives of Orange County BFF, Tamra Judge, to discuss The Real Housewives Ultimate Girls Trip: Ex-Wives Club, the franchise-mixing mash-up show the pair filmed last winter at The Real Housewives of New York City's Dorinda Medley's Massachusetts estate, Blue Stone Manor. Vicki and Dorinda got off on the wrong foot during filming, and they've stayed out of step since -- their bubbling feud boiling over in recent weeks as press ramped up for the series' return to Peacock. In an Instagram Live interview for Bravo, Vicki commented about Dorinda's mansion being in "the middle of nowhere" and "old," proclaiming she would be "friggin' miserable" if she lived there. That prompted Dorinda to fire back on her Radio Andy show, where she told her listeners, "You may not like my life, but I also don't date people that pretend to have cancer," a direct knock at Vicki's controversial relationship with Brooks Ayers, a man she ultimately said conned her.