A young woman reads a letter by an open window, her face reflected faintly in the glass, with a bowl of fruit tipped on the rug before her. For centuries the wall behind her was blank. A restoration completed in 2021 removed later overpaint to reveal Vermeer's own picture of Cupid, which makes it almost certainly a love letter.
Look closer
The green curtain at right seems to hang in front of the painting itself. Tiny dots of light glint on the fruit and in her hair.
Looks like this
Compared by a vision model
