Amanda Joy "AJ" Michalka (born April 10, 1991) is an American singer and actress from Torrance, California. Her parents are Carrey Begley-Michalka and Mark Michalka. Her older sister is actress Alyson Michalka. She and her sister are in the band 78violet. She starred with her sister in the Disney movie "Cow Belles". She is of German-American ancestry.