I also hope the session goes well.

I'd have a similar concern to Comrade that if you hoped she noticed, but then she didn't say anything, you might feel disappointed, unseen, etc. And if you normally wear more concealing clothing, she also might not notice a change.

Also, I don't see anything wrong with some level of joking about things that make you uncomfortable, as I do it, too (and so does my T--he has even admitted to doing this in session, like that he'll make a joke during a session when he might be feeling uncomfortable). But if you *only* joke about it, your T might not think it's that serious. I think in this case, both showing *and* telling is a good idea.