Can you guess who she is?

Hints:

A rebel, enigmatic as a sphinx, an art addict, she had many lovers, some famous some infamous, a few husbands, many dogs, a life full of pain but also full of excitement and passion (she lived in Italy for thirty years and she is buried there, near her beloved dogs).

She is the girl on the left and she made a mark on the XX century.

Who is she?

The comments will not be published until the identity will be revealed on a following post.
The first person with the right answer...will not win anything... only a mention!

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