A general search on Google for this as a trademark did not yield conclusive results but I do know quite a bit about buttock augmentation.
The proven methods are either Implants or Fat injections. Both have drawbacks in that implants are like breast implants but the buttocks are far more at risk of damage and is advised against.
Fat injections are normally only temporary though some surgeons use it in body sculpting but you have to wear a full body corset for months afterwards.
At your age, why not let nature takes its time and learn to live with your body for now, for in a few years time you may very well be struggling with a big bum as opposed to a small one.
A word of warning, some people have resorted to free-silicone injections put in by unlicensed black market butchers which has resulted in their deaths. Free silicone is dangerous.
Why not go to a gym and get a trainer to help develop your buttock area or buy specisl pants which enhance what you have already?
If you want more information on buttock enhancement, please click HERE
but please do not think I am advocating that organisation or even suggesting buttock enhancement by surgical means is a good thing at all. Any other ideas for enhancement should be regarded with suspicion.