Where did three go?

Here is a picture I took of Peyton yesterday after we got home from the zoo. I'm just wondering...why does my three-year-old look like a something that starts with "teen"? The only thing keeping her grounded at this moment, is the Dora the Explorer on the sides of her sunglasses. Thank you, Dora. She wore her sunglasses like this most of the day. Totally her idea.

Oh yeah, and she's eating a milkshake with a spoon. She IS my kid, afterall!