What to wear to confession

I’m going to to confession for the first time this week. I have POTS and overheat and it’s going to be almost 80° this week which isn’t normal for philly for mid March. I have longish shorts and a lululemon swiftly tech shirt I wear to mass all the time with a skirt should that be okay to wear I’m going to study in the park later that day. I have to get back to class afterwards. I’m being confirmed at Easter vigil.