Marianne Faithfull, a singer and actress known for hits like "As Tears Go By," died Thursday, a spokesperson confirmed. She was 78. "It is with deep sadness that we announce the death of the singer,

She and Jagger began dating in 1966 and became one of the most glamorous and notorious couples of 1960s “Swinging London.”

Marianne Faithfull died Thursday in London at age 78. The singer, actress and "It" girl of 1960s London inspired — or wrote — numerous Rolling Stones songs.