According to this site, there exists only one contemporary image. It is a "Drawing by Clément de Fauquembergue, the secretary of the Pa[r]lement of Paris. The artist had never seen Jeanne. It is known that she sat for a portrait, but it did not survive, so no exact image of her exists."
That contemporary image is here:
Below are some imagined portraits of her.
Her hair style seems to be derived from the previous image.
This seems fanciful, yet not showing her for what she was famous for.
From the workshop of Peter Paul Rubens.
By a major artist. He too seems to use the hair style in the first image.
By an important English artist.
The well-known Bastien-Lepage painting.
For some reason nearly every Rossetti portrait of a young woman shows similar features.
Ste Jeanne asleep.
A recent painting by an American illustrator.