This is an iconic photograph taken by Robert Cornelius in 1839. It is widely considered to be the first ever self-portrait photograph. Cornelius, an American chemist and photography enthusiast, set up his camera in the back of his family’s store in Philadelphia and posed for
From Wikipedia
A selfie is a self-portrait photograph or a short video, typically taken with an electronic camera or smartphone. The camera would be usually held at arm's length or supported by a selfie stick instead of being controlled with a self-timer or remote. The concept of shooting oneself while viewing their own image in the camera's LCD monitor is also known as self-recording.