Pole newbie - what to wear for classes?

I'm about to graduate from my beginner pole class and the instructor mentioned "pole shorts". I'm not very comfortable with wearing like a short, short pant or bikini style bottom (body image issues). What can I wear to continue participating? Would like bike shorts and a tank top be ok or do I need to have more skin out? Maybe a sports bra with bike shorts?

I was previously wearing a T-shirt and leggings but I'm guessing that won't work going forward.

Also: any recommendations for knee pads for plus size gals?

Edit: thank you so much everyone. I ordered a pair of shorts and a cropped tank top to try out for my Monday class