The Blue Room (French: La chambre bleue) is a 1901 oil on canvas painting by Pablo Picasso, which he painted during his Blue Period. It depicts a scene of a nude woman bending over in a bath tub. A hidden painting was revealed beneath the surface by x-ray images and infra-red scans, showing a portrait of a bearded man.

https://en.wikipedia.org/wiki/Pablo_Picasso