Last day of school costume

Yes, my last day of elementary school is approaching (May 26th) and it's tradition to dress up.
Now, you have two choices: Dress up in a humorous way or a rather slutty way. I'll try to avoid both.

Anyway, here's what I'm wearing

I'm not sure whether I'll wear the headband or not, but I'm going to wear stockings underneath the dress in a colour I haven't decided on yet.