The rating is due to:
* Teen romance: The film features a strong romantic theme and some mature themes, including the exploration of forbidden love and the consequences of falling in love with someone who is different.
* Violence: The film contains some violence, particularly towards the end with the vampire characters.
* Frightening scenes: The film's supernatural elements and vampire themes can be scary for younger children.
Ultimately, the decision of whether or not a child is mature enough to watch "Twilight" is up to the parents.