On the left, 16-year-old Jake Gyllenhaal in a yearbook photo from Harvard-Westlake School.
On the right, 23-year-old Jake Gyllenhaal as teenaged Sam in The Day After Tomorrow.

On the left, 16-year-old Jake Gyllenhaal in a yearbook photo from Harvard-Westlake School.

On the right, 23-year-old Jake Gyllenhaal as teenaged Sam in The Day After Tomorrow.