As and Air Force and airline pilot, I wear panties as well as pantyhose under my uniform. Occasionally, I would also wear a bra and cami under my flight suit. I am pretty sure that the "bumps" from my bra were visible under my flight suit, if you looked closely. Sometimes on an airline layover, I will wear pantyhose under my jeans (without any socks). I would guess that my nylon covered ankles are visible, but that's okay. On Hawaii layovers, I usually go out in shorts and a tee shirt. I almost always wear a bra under my tee shirt. I have never noticed any strange looks, but someone must have noticed the outline of my bra!