Thanks to everyone for the votes and the kind compliments.
Some have questioned the relevance of this image to the challenge. Knowing the model, I think of the defining features of her personality to the polka dot dress in the same way that you might consider: a cigarette to Marlene Dietrich; street pajamas to Katherine Hepburn; giant glasses to Elton John, etc. It's part of their "signature look," and we associate those looks with their features. In addition, I felt that her eyes echoed the polka dots very well. Perhaps one commenter was being "too literal" as they mentioned.
"We often remember people for the little things about them or their personality, what makes them who they are. Find someone, figure out what defines them, and illustrate it for us. Title your entry with the feature you are illustrating"
I'm not getting the connection of her dress to the feature that defines her or her personality.
I think I'm too literal.
I do love the portrait. I just wish you'd chosen... uhh... "her beautiful hands" or "her understanding eyes"... or... as her defining feature.