I asked her how can I lose weight fast

My mother went completely nuts. She was yelling at me because I asked her only one question and for me it was something normal. I asked how can i lose weight fast. She looked at me and then her face turned red and she was screaming for hours until my father managed to calm her down. I have never seen her like that. She was furious and obviously angry. Well for me it was nothing obvious I jus wanted to know how can I lose weight fast. After this situation she went to my room and she started explaining me that I do not need any diet or other weigh losing methods. She said to me that I am to young and that I need to wait until my body will be fully developed to eventually start some diet. Well I am thirteen now but I think that I am too fat for my height. And I do not believe that I am to young to start a diet. My mothers claims that I need all those vitamins an other things to make my body strong and bones too. But I want to look just like the girls in my favorite TV series. They are all so slim and beautiful. All the fat girls are the ones which are laughed at. I do not want to be unpopular at my school. That is why I want to now how can I lose weight fast. It is never to early to start caring about our appearance. The diet can also be healthy and can help me to grow healthy.