That was over 13 years ago in 2008.
Today he is 23, and has starred in 8 movies in total, 6 since The Day the Earth Stood Still was released.
In The Day the Earth Stood Still, I think Jaden Smith looks:
The Day the Earth Stood Still scores 5.2 out of 10 on The Movie Database.
Jaden Smith's first acting role was as 'Christopher' in The Pursuit of Happyness, released in 2006 when he was 8.