Anita Pallenberg Facts: Italian-German Actress And Keith Richards' Ex-Girlfriend Dead At 73

Italian-German actress Anita Pallenberg, who dated Rolling Stones guitarists Brian Jones and Keith Richards, died Tuesday at the age of 73. The news of her death was revealed by Stella Schnabel, daughter of painter Julian Schnabel, on Instagram.

“Thank you for the most important lessons,” Schnabel wrote along with a photo of her with Pallenberg, who starred opposite Mick Jagger in "Performance." No cause of death was revealed yet for Pallenberg who is survived by her two children from her 12-year relationship with Richards – son Marlon, 46, and daughter Angela, 44.

Read: Former Rolling Stone Bill Wyman Diagnosed With Cancer

"I have never met a woman quite like you Anita," Schnabel wrote, according to Rolling Stone Magazine. "I don't think there is anybody in this universe like you. No one has ever understood me so well. You showed [me] about life and myself and how to grow and become and exist with it all … Thank you for the most important lessons – because they are ever changing and definitive. Like you. We are all singing for you, how you liked it."

Pallenberg, who was known for sporting the 1960s style, played the Great Tyrant in Roger Vadim’s “Barbarella,” a nurse in the cult film “Candy,” and in “Performance.” She played Sin in Abel Ferrara's Go Go Tales (2007), a Queen Elizabeth impersonator in Harmony Korine's Mister Lonely (2007) and an opium-den hostess in Stephen Frears' Cheri (2009).

“A vagabond. An adventurer. I am not a person with one specific talent. I wish I was,” is how Pallenberg once described herself during an interview, according to Alain Elkann's website.

Born in Italy in 1944, Pallenberg came to New York after she was expelled from a German boarding school at the age of 16. Pallenberg started dating Rolling Stones guitarist Brian Jones in 1966, following which she was in a long time relationship with Keith Richards. However, their relationship was tumultuous and the duo decided to split in 1980.

"I like a high-spirited woman. And with Anita, you knew you were taking on a valkyrie — she who decides who dies in battle," Richards wrote in Life, his 2010 autobiography.

Pallenberg and Richards had three children, Marlon, Angela and Tara, though he died of pneumonia at 10 weeks.

Read: Rolling Stones Top 100 Songs Of All Time

Richards and Pallenberg both struggled with heroin addiction, and in 1977, they nearly faced significant jail time after being busted for possession just days apart in Toronto, before ending up in rehab.

Despite their split in 1980, the two shared an amicable relationship. In a 2010 interview with Rolling Stone, Richards recalled: "It was tough. At the same time, there is an underlying love that goes beyond all of that other stuff. I can say, 'I love you, I just won't live with you.' And we're now proud grandparents, which we never thought we'd ever see."

Below are some tributes that poured in on Twitter after the news of Pallenberg's death.