Helps with the belting. 90s power metal singers wore tight leather pants to effectively reach castrati levels of falsetto. She is using a similar technique using super tight high-wasted leather pants to make sure her organs squeeze her diaphragm to help with the high notes.
You can see the strain imposed on her in having to look like that (ie super slim and amazing). It's no wonder that in the end - something had to give. The demands we put on these phenomenal, dazzling Front Female Vocalists ... are crazy 😑😵🥴😠
