my future prom

Heyheyhey,
I was just wandering : what would I wear to my prom? In some kind of way, it seems so far away (yup, still just a teenage girl) but in the other... it's less than 3 years away and I've still got some work to do :D
So I picked a few completely different dresses, because I also haven't got this real own style thing I guess, so it's your pick!
So, why should I wear what, combined with what and why?
Lovelovelove,
Louise