Can you wear this to surgery?

Hi, I'm having surgery on my left inner ear this summer, I've had problems with that ear my whole life so I at least know this operation. I'm wondering though, I'm Autistic, and I'm very sensitive to certain materials, the gowns they give don't bother me, but can I still wear a bra? I don't mind a wireless one? I don't like my nipples rubbing against anything, also what about leggings or scrub bottoms? Are there any hospital approved pants I could wear? I do not like my legs, touching them selves even if I've just shaved, naired, or waxed, if I was having surgery below the neck I'd understand but since it's just my ear, is there anyway I could have on a few more items of clothes than just the hospital gown?

Thanks