Not too many people could keep up with the lifestyle that pervades Keith Richards but Anita Pallenberg seemed to have managed it. Anita was a model with both intellectual prowess and an appetite for an alternative lifestyle. She was quite a lady who exerted a big influence on the Stones.
This obituary in V Magazine sums her up well.
http://vmagazine.com/article/anita-pallenberg-the-woman-who-out-keithed-keith/