How old was Amanda Seyfried in Mean Girls?

There’s something captivating about discovering a celebrity’s age during a defining role. It connects us more personally to their story and evolution. Read on to find out the age that accompanied the spotlight.

In Mean Girls, Amanda Seyfried took on the role at the age of:

18 years old

Based on our estimate, that was the actual age of the celebrity at the time.

This age was calculated based on the beginning of the release year of Mean Girls:

January 1, 2004

And the day in which Amanda Seyfried was born:

December 03, 1985

Given the typical time period between the filming and the release date, Amanda Seyfried could have been a year older or younger than the age shown when some scenes were being filmed.