When a coworker pulls you aside and asks if you're transsexual (6 months HRT, getting obvious), it's probably time to inform management. The woman who figured me out is supportive, btw.
This'll be a fun conversation! Advice from corporate legal team is that, once I inform management, all policies related to gender immediately apply. Restrooms, apprehension stuff (I'm asset protection/loss prevention), etc.
I'm not full time yet, so this'll be an interesting next few weeks!