Heath Ledger was 19 in 10 Things I Hate About You when he played the character 'Patrick Verona'.
That was over 25 years ago in 1999.
In 2008 he died aged just 28, starring in 28 films in his career, 24 of those after 10 Things I Hate About You was first released. If he were alive today he would be 45.
In 10 Things I Hate About You, I think Heath Ledger looks: