Ezra Miller was 15 in Afterschool when they played the character 'Robert'.
That was over 16 years ago in 2008.
This was their first recorded movie acting credit (although may not technically be their first actual acting role).
Today they is 31, and has starred in 21 movies in total, 20 of those since Afterschool was released.
In Afterschool, I think Ezra Miller looks: