Hello, Im a 13 year old girl. I weigh maybe about 110-117, im not positive. But I hate it!! Yeah i know it is not that much. But because im not too tall it makes me look fat. And when I sit down, i want my stomach to be flat. And sometimes, when I am getting ready for school in the morning, I will look in my mirror, and like stand straight and then sideways, and It seems like Im skinny. But the mirrors in school or the mall dont make me look the same. Its really wierd. But does anyone have any tips on helping me have a flat stomach? If so, PLEASE let me know!! Thank you..