Amanda Seyfried Then
Amanda Seyfried was the unsung hero of “Mean Girls,” playing the dim-witted Karen in her first movie role. It didn’t quite make her the star she’d eventually become, but it’s definitely the first time most of us saw her. And she was hard to forget, so much so that in any role she took over the next few years, she made us go, “Hey, it’s that girl from ‘Mean Girls’!”