The easiest way to alter - what you want to do - clothing is in the texture file. In the material room, under Advanced, have a look at the file and path of that image. You'll want to create a trans-map and alternative image file (always work on a copy!) ... there are heaps of tutorials on how to do this in Rendo's tutorial section and Daz's as well.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks