she attempted to win her own show, After the Crown, but was eliminated. She hosted the Miss Teen USA 2008 pageant on August 16, 2008, along with co-host Seth Goldman. Acting 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. On January 18, 2011, Hennig announced that she was leaving Days of Our Lives. She was quoted in Soap Opera Digest, saying: "It just feels right. I have been preparing for this for a while, so I have said my mental good-byes. I will miss the faces I see here every day, but everybody has been really encouraging and has embraced my decision... I feel like I'm going out with a bang after last week's show airs and I feel great about it creatively and I am thankful to the writers for giving me that. It's been a lot of fun to play and I wouldn't change anything." From 2011 to 2012, she played Diana Meade, a main character 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. The show was cancelled after one season. Well, four years, counting with the 2023 film that was just released. Beginning in the third season, Hennig appeared as Malia Tate on the MTV series Teen Wolf. She was promoted to series regular for the fourth season and remained part of the show until it ended in 2018. For her portrayal of Malia, she won Choice Summer TV Star: Female at the 2016 Teen Choice Awards. In 2014, she appeared in the Blumhouse horror films Ouija and Unfriended. She also appeared on the Band Perry's music video for "Gentle on My Mind". In 2017, she starred in country music artist Maren Morris' music video for "I Could Use a Love Song". In 2018, she played supporting role as a photographer, Carrie Grey, in the Netflix romantic comedy When We First Met. On March 10, 2020, Hennig was cast in an upcoming NBC comedy pilot Crazy for You in a leading role.