Any tips on how to loose belly fat?

I m 15 and I m not fat I weigh around 108 Pounds and I m 5’7 1/2. I think I have a porpotional weight for my height but I can t get rid of this belly fat!

and I m really ebarrased to go out in a bathing suit with my friends. Does any know how to loose it?
Pls help!