Shelley Catherine Hennig (born January 2, 1987) is an American model and actress. She is also a beauty pageant titleholder who held the Miss Teen USA 2004 title. She played Stephanie Johnson on Days of Our Lives and starred in the CW series The Secret Circle as Diana Meade. She played the character Malia Tate in Teen Wolf. Hennig also starred in horror films Unfriended as Blaire Lily and Ouija as Debbie Galardi. She has been nominated for two Emmys for her role on Days of Our Lives. She has won a 2016 Teen Choice Award.
Hennig was born in Metairie, Louisiana, and later lived in Destrehan, Louisiana. She is the daughter of Cathy Distefano Gosset and Glenn H. Hennig, Sr.
Hennig won the Miss Louisiana Teen USA 2004 in a state pageant held in Lafayette, Louisiana, in November 2003. This was the first time she competed in the state pageant. In August, Hennig represented Louisiana in the Miss Teen USA 2004 pageant held in Palm Springs, California. She won the Miss Teen USA title, becoming the first winner from Louisiana and the first girl from Louisiana to win a national title since Ali Landry was Miss USA 1996. Her Miss Teen USA winnings included a one year modeling contract with Trump Modeling Management, and a scholarship to The New York Conservatory for Dramatic Arts.