Echoing what the rest says, it's really not the model look you should be aiming for. Everyone is different, and honestly, most supermodels live a very unhealthy life.
For a teenager you are definitely not heavily overweight or anything, so don't even be thinking of diets now! If people insult you, either tell them off, or if you don't dare to do that ignore it. They're just trying to make you feel insecure, usually the bullies are the ones insecure about themselves.
Please don't go another day not eating, that's just really not good for you. It's better to eat little things on a day, to keep your digestion running. If you want to eat more healthy, that's a great thing. Just eat lots of vegetables and protein(meat, dairy), less carbohydrates and sugar. But don't overdo it, okay? You're still very young, so your body needs enough energy to grow.