Haha don't worry, I'm used to being told that I look young. I'm only 18 (I'll be 19 when I start school though) but I get mistaken for 14/15 a lot. I'm pretty sure people who don't know me would think i was going to be a freshman in high school than college lol! But I think size has to do with it, too. I'm kind of on the petite side.
Anyway, thanks for the input!