I have a similar problem, although mine haven't been perky since they started growing in 5th grade (yeah, I was overweight even back then). I've gone from a DD to a D, and hopefully will go down to a C by the time I hit goal, but they're sure hanging a little lower than ever. I'm hoping that time, exercise and youth (I'm 23) will be on my side, and they'll perk up as I lose the excess weight and my skin adjusts to its new size.