Lee was born May 22, 2004; she moved to Manhattan Beach, California and began acting at the age of just ten.
Lee is half Chinese on her father's side. She has an older sister and a younger brother.
She is known for playing the title role on the Disney Channel series Andi Mack. Prior to Andi Mack, Lee recurred in three episodes of Shameless as a girl soldier. She also appeared on Scandal as Violet, a spelling bee champion.