and 51kg?? I thought you meant 51 years old. :/ Just focus on doing your hair well, make-up, and dressing stylishly. I don't think you need to lose anything.
People used to make fun of me, too when I was overweight. But the main problem was that I didn't dress right for my weight. I'm not saying you shouldn't lose weight if you're unhappy. I used to be 140lbs now I'm 117lbs. But you can be 230lbs and look HOT if u dress stylishly and learn to do your hair and make-up well. People will RARELY make fun of others who look put together. I lost weight by liquid and water fasting and some walking. Do your research though on how to go about losing weight the healthiest way possible. And if you are blessed enough to get the motivation you need, go full force into losing weight and never look back. If someone as lazy and crazy as me can lose 23lbs and occasionally get compliments, you will do it definitely. I believe in you and in a God who will give you all the strength and motivation that you need. I think you're already beautiful and you'll just grow more and more lovely as you move forward. Take care.
How old are you and how tall? Depending on your age and height 51 kg doesn't seem so much...
Im sorry i mean im 51kg not 51 years old.