Well you have heard of mirrors, technically first selfie

It seems to be a recreation of this drawing. Being photographed by the worlds second camera. The camera existed long before photography. “camera” is a latin word that means “room”, and the first “camera” was a camera obscura (“dark room”) with a pinhole at one end and something to project the image onto on the other. nobody knows when this was first invented, but the earliest mention of the principle is in the 4th century BCE.

World's first camera
Damn you for making sense – first selfie in history