Bravo is celebrating The Real Housewives franchise in a big way for its 20th anniversary with The Real Housewives of Orange County Season 20 and The Real Housewives Ultimate Girls Trip : Roaring 20th . At the NBCUniversal Upfront presentation, the network announced that RHOC is set to premiere its landmark 20th season on Thursday, July 9 at 8 p.m. ET. RHOC Season 20 will mark the return of Vicki Gunvalson, the OG of the OC. The series premiered in 2006 and led the way to expand to locations like New York City, Atlanta, New Jersey, Miami, D.C., Potomac, Dallas, Beverly Hills, Salt Lake City, Dubai, and, most recently, Rhode Island. The ultimate celebration of the franchise is set to be with the all-stars  Real Housewives Ultimate Girls Trip: Roaring 20th,  which will feature many past and current  Housewives  coming together to reminisce about the series. Bravo has set the premiere date for Sunday, August 9, at 9 p.m. ET.…