American singer and actress known for being one half of the musical group 78violet. Her song "It's Who You Are" was used in the film Secretariat. She is also known as Lainey Lewis on the ABC comedy series The Goldbergs.
She played numerous musical instruments as a child and was a catalog model as a teenager.
In 2017, she and her sister announced they were making a comeback as the music duo Aly & AJ (aka 78violet) after a ten-year hiatus.
She has one sister, Alyson Michalka, who is also an actress and musician.
She and Ashley Tisdale have acted on television together.