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,

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.

Faithfull was a singer, an actress and the one-time girlfriend of Mick Jagger. Deadline called Faithfull a muse to not only the Rolling Stones but also David Bowie. Faithfull’s father was a British intelligence officer and professor while her mother was the daughter of Austro-Hungarian nobleman.