Marianne Faithfull, the British pop star, muse, libertine and old soul who inspired and helped write some of the Rolling Stones' greatest songs, died at 78 on Thursday in London. (Jan. 31)

Marianne Faithfull's first hit, "As Tears Go By," was recorded when she was just 17 years old after she met with the manager of the Rolling Stones at a party.

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.