Ballet restroom Snowflakes Zinaida Serebryakova (1884-1967)

The picture has something of this: people, group, shirtless, nude, man, woman, dancing, brunette, wear, necklace, lid, two, three, position, skirt, many.
Perhaps it’s a painting of a pair of ballerinas sitting in front of a mirror with their feet on a stool and one of them holding a shoe.