Sadie Robertson (born June 17, 1997) is a reality television star on the A&E show Duck Dynasty. She is the granddaughter of Phil Robertson, founder of Duck Commander. Her father is Willie Robertson, the company's CEO. She is the younger sister of John Luke Robertson.Robertson attends Ouachita Christian Academy in Monroe, Louisiana. In 2013, she ranked sixth in the state of Louisiana for javelin throwing.On August 26, 2013, she started a YouTube channel entitled The New Different with friend and Preachers' Daughters star Kolby Koloff. She has not been seen on the show since January 13, 2014.She sang "Away in a Manger" with Alison Krauss for her family's bestselling album, Duck The Halls: A Robertson Family Christmas.She designed her own dresses in a collaboration with Sherri Hill, and modeled them during New York Fashion Week. Robertson's line of dresses is labeled Live Original by Sadie Robertson.She has publicly stood up for her grandfather after his controversial interview in GQ magazine.