Michalka and her sister, actress Amanda "AJ" Michalka, are members of the musical duo Aly & AJ. She grew up in Seattle, Washington and Southern California, with her younger sister, Amanda "AJ", who is also an actress and musician.
Her father, Mark, owns a contracting company, and her mother, Carrie, is a musician and performed with the Christian "JC Band".
Michalka and her sister, AJ Michalka, formed the musical duo Aly & AJ in 2004.So, besides Harrison, was there someone else in her life in the past. Before AJ got to know Harrison she was in a relationship with Ryan Blair an American entrepreneur and author. The couple was on good terms in the early stage of their relationship, but maybe they were not meant to be together forever, the couple broke up in 2011 and the reason behind their separation hasn't been revealed by either of the two.Alongside her relationship with Ryan, AJ was in a relationship with Hunter Parrish in 2009-10, Bennet Heimple in 2008-9, Ryan Sheckler in 2008 and Joe Jonas in 2005-6. Michalka participated in the casting process and production for the film.The movie was written and directed by her husband, Stephen Ringer.Michalka appeared in the independent drama film, Crazy Kind of Love, alongside Eva Longoria, Virginia Madsen and Amanda Crew. In 2013, Michalka participated in a multi-episode role on the sitcom Two and a Half Men.