Mackenzie Douthit (formally McKee; born October 17, 1994) is an American reality television personality from Miami, Oklahoma. She received public attention after being cast in the reality television series 16 and Pregnant in 2011, which documented the pregnancies and first months of motherhood for several young women. Later that year she was cast in the spin-off series Teen Mom 3 and appeared in its first and only season of that show, alongside Briana DeJesus, Alex Sekella and Katie Yeager, in 2013. McKee joined the cast of Teen Mom OG followi…