do you think my karate teacher is to creepy

so I'm at karate and we're about to fight he pulls me aside and says "you know your a girl and your starting to develop you need to make sure your uniform needs to be closed togather as possible" OK now I'm in my head like yeah you don't think I know that I mean this is my body and I already had my period for a year so basically what he was trying to say is we don't want your Brest to be a distraction so cover up but I had s shirt on like so what are they looking at and how could you notice if you weren't looking at them