The reality show “The Houstons: On Our Own” is set to debut on Wednesday, Oct. 24 at 9 p.m. EST on Lifetime. Cast members Bobbi Kristina Brown, Cissy Houston, Nick Gordon, Pat Houston, Gary Houston and Rayah Houston all took the time out for a photo shoot to help promote the docu-series. Check out the pretty pictures shot by photographer Jill Greenbery.