AJ Michalka is an American actress and singer. She started her acting career in the early 2000s. During her beginnings, she guest starred on the TV shows Birds of Prey, General Hospital, and Six Feet Under. Her first notable role was as Shannon Gressler on The Guardian. She next starred as Bonnie on the TV show Oliver Beene. She next starred on the TV movie Super Sweet 16: The Movie. After starring as Gillian Duncan on the TV movie Salem Falls, she became known for starring as Lainey Lewis on The Goldbergs. On the big screen, she’s had roles in the films The Lovely Bones, Secretariat, Super 8, Grace Unplugged, Angels in Stardust, and Expecting Amish. As a singer, she performs with her sister, Aly, in the duo Aly and AJ, known before as 78Violet.