Brittany Murphy was 20 in Girl, Interrupted when she played the character 'Daisy Randone'.
That was over 25 years ago in 1999.
In 2009 she died aged just 32, starring in 46 films in her career, 35 of those after Girl, Interrupted was first released. If she were alive today she would be 46.
In Girl, Interrupted, I think Brittany Murphy looks: