The braless nanny=gross and unprofessional.
As a mild feminist and super well endowed chest wise myself, despite this, I thought the oblivious nanny's braless conduct was SO gross and inappropriate. The getting her tits wet from the shower nozzle, would make want to beat some ass.
I wear a bra 24/7... and the nanny could still go braless but wear dark colored tops with a little thicker material. I doubt it wouldn't fly if a male nanny wearing white spandex or boxer briefs then his shlong getting soaking wet and see through in public as well as in front of the parents and their children!