BMI of 21? Am i fat? im 11 and 4'8?

i have a bmi of 21 and im 11 i am 4'8 and 97 pounds ( most of mii friends r in da 90's range 95-100) and i have noo clue if im fat i mean 21 is good but idk how mii body looks and i dont need 2b told ur to young 4 dat dont wrry cuz i am i want pics of wat dat looks like or wat u tink an 11 year old should like!! plz help all da other girls weigh da same as me and sayy dere fat but dere not i tink da same ting am i like dem? skinny but dont c it?