I need to lose weight?!?

Dont worry,im not gunna be a 12 year old anorexic chick.But i just wanna loose my belly fat so when summer comes around; i can have a flat stomach so im not embarresed everytime i go swimming. I realize i have a long time, but i wanna start NOW. And i do dance monday thru friday and about 2-4 hours a day, so that will help. but i wanna eat better. What to eat? and what to do? and the only problem is that i dont want my parents to know. Cause then they will think im being anorexic and saying im fine the way i am. And im 106 pounds, and my friend (boy) is 87. So i feel kinda akward. I amm tall for my age, but i just wanna loose enough pounds so thaat im 100 or 95 OR not gain weight and wait for everyone to catch up. Please help :) Btw i have a dog, that im going to go for a run with, only problem is that its a chiwawa. And i do wii fit for 30 minutes everyday.