Brandon Lee was 7 in Bruce Lee: The Man and the Legend when he played the character 'Self (archive footage)'.
That was over 49 years ago in 1973.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 1993 he died aged just 28, starring in 20 films in his career, 19 of those after Bruce Lee: The Man and the Legend was first released. If he were alive today he would be 58.
In Bruce Lee: The Man and the Legend, I think Brandon Lee looks: