Let's all just take a moment to admire Amanda Seyfried's hair, again. It's her 27th birthday today and we're taking a look back at her beauty looks over the years and, as it turns out, she's got the best hair we've ever seen! With her a coveted cosmetics contract with Clé de Peau Beauté under her belt, Amanda stays true to her signature style of long blonde locks and nice and safe neutral eye makeup. But let's not to discount her dramatic makeup moments. She ramped it up with an up 'do or two while promoting Dear John, along with some seriously shimmering and smoky eyes. To celebrate her birthday, we're tracking her beauty style from the Mean Girls days to now.