Yes, to some extent, because the key to supporting breast fullness lies in breast tissue and fat tissue in breast. When you lose weight, the adipose tissue in the chest will also shrink to a certain extent, making the chest smaller and drooping to a certain extent! It is recommended to wear adjustable underwear of appropriate size when losing weight to prevent chest deformation.

I am a doctor in Zhengzhou Tian Li Plastic Surgery Hospital. I hope my answer is helpful to you!