DH didn't get any info like that. My guess is then it doesn't matter, if it did I'm sure it would be in the info.
Having said that, no reason to wear anything other than roll on deodorant.
If you want what DH had. It was a fantastic service i was really surprised. Assuming yours the same it was arrive morning see consultant. Tell them med history and what found breast.
Consultant examination.
Wear clothes on top that are comfy and easy to take on a lot, rather than anything with lots buttons etc.
Then down for mammogram and ultrasound.
Make sure take mags, book, puzzle book, snacks, drinks etc. Waiting turn for the different things which is boring and for many obv means thinking about where you are and why.
Take things you really enjoy to take mind off as best can and hopefully make time pass bit quicker. And having something to eat drink is just always a good idea for this sort of thing.
After scans back up see consultant. They already have results and have a look. They tell you what they think, and how want to proceed.
Home again.
DH it was not suspicious, had some tablets for what she diagnosed. Sometime to do with fibrous bits I think.
So hopefully that is way at your hosp and no stressful waiting to find out for days.
Good luck! Xx