Evan Rachel Wood was born on September 7, 1987. The film "Thirteen" was released in 2003, and she was about 14 to 15 years old during its filming. Specifically, she was 14 years old while filming and turned 15 around the time of the film's release. This aligns with reports that Evan Rachel Wood and Nikki Reed were 14 and 15 years old during the filming of "Thirteen".