Female plane model, height 167cm, weight 43kg, chest circumference 69D, waist circumference 56, hip circumference 87, thigh circumference 42 and calf circumference 26.
I think it is necessary for you to gain weight. Too thin is not good-looking. Besides, your waistline is quite thin, and your thighs and calves are also very thin. Besides, your height is quite high. I think a girl of your height should weigh around 100 to be healthy, and the most important thing is not to be fat or thin. Don't do it for 1500.