Don't some dresses just make you want to pose like a (wanna-be) model? They flow in a way that makes you feel curvy in all the right places even if you're really way too much of a 12-year old to have curves. I bought this striped dress at H&M last summer for no more than $30 and it has certainly been worth its weight in gold. I love it because you can dress it down with some sneakers and a scarf for daytime errands or you can wear it with heels and a leather jacket for nighttime, as I did for my incredibly grown-up birthday dinner at Red Robin (I'm obsessed with their vanilla milkshakes... FREE REFILL!!)
Random tidbit about moi: I am OBSESSED with stripes. My closet is made up of like 60% stripes.