Shelley Catherine Hennig is an American actress and beauty pageant titleholder from Destrehan, Louisiana.
She won the Miss Louisiana Teen USA 2004 in a state pageant held in Lafayette, Louisiana, in November 2003. This was the first time that she competed in the state pageant. Hennig represented Louisiana in the Miss Teen USA 2004 pageant held in Palm Springs, California. She won the Miss Teen USA title.
On April 20, 2007, Hennig joined the cast of Days of Our Lives in the contract role of Stephanie Johnson. In 2010 she received a nomination for the 37th Daytime Emmy Awards in the Outstanding Younger Actress In A Drama Series category.
From 2011 to 2012, she played the major character Diana Meade in the TV series The Secret Circle based on the books written by L.J Smith. On May 11, 2012, it was announced that the series would not be returning for a second season. She then appeared in the MTV series Zach Stone Is Gonna Be Famous as Christy.