I'll spare you more details of her foolishness, but this link provides the basics.
Cunard's portraits were mostly photographic, but a few were painted. Here are examples of both:
This seems to be a contact print. Man Ray tended to cut the bottom at or just below her left elbow.
A fashion magazine image.
This is one example from several taken at one shoot. Probably not used for publication, as others were better.
Doesn't really look like her. Plus, I don't see her trademark bangles.
A Russian look, but that was in fashion during the early 1920s.
Edging towards Surrealism, but a few bangles still show up.
A mess of a painting.
Several sources mention that Lewis and Cunard were having an affair that year. This bangle-free drawing exhibits his skill in judicious modernist simplification that nevertheless retains the character of the portrait subject.