1. This is helpless, because it is innate. Leave it to fate.
But it can be improved a little the day after tomorrow. For example, practicing yoga. Gymnastics. National dances, etc.
Although this can't change your skeleton, it can change the softness of your skeleton. As long as it softens, perseverance will appear slender. There is a saying that women are water. Be gentle.
I also have several female classmates in the northeast. They are tall and burly, 1.7 meters and 1.8 meters, which are taller than many male students in South China. But their bones are very soft. I don't think they are terrible at ordinary times, but I think they are beautiful.