THE UNKNOWN PAINTING

I scooped this sweater at one of my favorite vintage outposts in the Village, instantly recognizing the image from Art History. However, try as a might, I cannot identify this painting! I've scoured the internet and sourcebooks and cannot uncover the title or artist of this work.
HELP! Do you know this painting?
See the last time I work this skirt, on a Brooklyn rooftop.
Sweater: Vintage Skirt: Vintage Socks: HUE Boots: DKNY Sunglasses: Marc Jacobs
Photos by Kathy Paciello.