How can i lose weight fast and healthy?

I am 15 years old and I have tryed all sort of dieting .. but it doesn't work .. i want to lose weight healthy .. i weigh quite a lot for my age and have a large frame .. i want to fit in to a size 10 prom dress soo i really want to lose weigh.. im a...

size 14 at the moment

how can i lose weight fast and healthy??

To lose weight fast and healthily i suggest working out the parts of body with which you'd like to lose mass from and eating less carbs, carbohydrates are the energy with which your body runs on, if you're to eat less carbohydrates the secondary energy source is your body fat, your body will eat away at the body fat and thus you will lose weight, although i am glad to hear you have a reasonable goal, given your large frame you're not suggesting a very small size which is what i hear a lot and is quite annoying, if your prom is somewhere in april or may, i can very well see you losing enough weight to fit the size you're aiming for. Hope i helped, for any more in depth questions message me =)