artist unknown

Before people were really using the internet, I used to collect magazine tears.
The other day when I was looking through my old file folders, I came across this painting that I'd enlarged on a color copier, and once had hanging in my dorm room. I don't know who the artist is, unfortunately, and even with the use of the web now, I still can't track it down!
Anyway, I've always admired how the artist used different blocks of color to define the shape of the girl, only using a black line for face detail and the midriff. It doesn't quite make it dimensional but tricks the eye into understanding.
I would like to call this piece, bra free.