Lee Young-yoo (born July 10, 1998) is a South Korean actress and singer. Lee began her acting career as a child actress in 2003, and among her notable television dramas are Bad Housewife (2005), Bad Family (2006) and The Queen's Classroom (2013). She was also one of the vocalists of the K-pop all-girl children's group 7 Princess from 2004 to 2005; she left the band and released a single as a solo artist in 2008.