Weight Gain?!

Maddie
I dont want any "hate" comments or "Youre to young" 
But im 16, i want to gain weight. Im 4'11 and i weigh about 96 pounds. Ive been trying to gain weight because im self concious about being so skinny & with people always assuming im anorexic. (i dont want the "oh youre beautiful no matter what size" either) I eat, A LOT!  but i never gain weight. I have a high matabolism. I mainly just want weight in my thighs. Just because I extreamly hate my thigh gap. Any suggestions?