Please help me to model the racquet clothes, like the clothes taken in the studio, how to make the clothes vertical and not perspective? For example.

The distortion is caused by your lens. You can move the lens up properly or shoot with a tripod.

If you don't want to shoot a single object vertically, you can choose hanging or stereo shooting to create. You can decorate your wall, and then hang clothes on the wall, which can reduce deformity and increase the three-dimensional sense. Or let the real model try it on, which can better realize the clothing.

I hope it helps you!