arm-gap-pc-elvgren-02 Gil Elvgren (1914-1980)

The picture has something of this: woman, people, wear, fashion, sexy, girl, portrait, glamour, model, dancing, retro, lingerie, dress, dancer, blond, fashionable, nude, music.
Perhaps it’s a painting of a woman in a short dress leaning on a bannister with her hand on the bannister rail and posing for the camera.