Oxygen Media moves in with Nikki Alexander and her big modern family in the back-to-back series premiere of It Takes a Sister, airing Tuesday, August 4 at 9 pm ET/PT. The comedic docu-series follows Nikki who lives under one roof with her four younger sisters, her eight nieces and nephews, three dogs and one of her sister's exes who is also her assistant. With never a shortage of shoulders to cry on or laughs to share, these sisters have an unparalleled bond and are ready to embark on a fresh start down south in Knoxville, Tennessee.