A statement said: “It is with deep sadness that we announce the death of the singer, songwriter and actress Marianne Faithfull.
“Marianne passed away peacefully in London today, in the company of her loving family.
“She will be dearly missed.”
Faithfull began her singing career in 1964, after being discovered by Rolling Stones manager Andrew Loog Oldham.
She released her self-titled debut album in 1965, which featured her UK number nine hit single, along with number four hit Come And Stay With Me, at the same time as follow-up LP Come My Way, largely made up of folk covers.
She was famously found wearing nothing except a rug at an infamous drugs bust at Rolling Stones guitarist Richards’ country house, Redlands, in 1967.
Following her split with Sir Mick, Faithfull spent two years on the streets of Soho while addicted to heroin before living in a squat.
She returned to release an album, Broken English, in 1979, which is now regarded as a classic.