Heather Rae El Moussa isn't ruling out an official Selling Sunset return after making a cameo in the upcoming season. "If I was to ever go back, it would be with Selling Sunset [and not Selling the OC] - just because that was my group," Heather, 37, exclusively told Us Weekly while promoting a new PETA campaign that features her and husband Tarek El Moussa's 2-year-old son, Tristan. "We were all an office and friends before Selling Sunset was even a show.