Marianne Faithfull, the songstress who helped spur music's British invasion and was a muse to the Rolling Stones, died Thursday at 78.

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.