dusters yes I think someone male eg wearing ‘sexy’ fake standing out nipples under their already-inappropriate non-professional and massively ‘female’-stereotyped costume is being completely offensive in the workplace. Obviously to women in the office but also it is offensive to everyone else who adheres to a dress code or uniform as has been rightly said.
With the added sexual fetish undertone which is overly threatening to women in its power play and daring them to complain. While in many cases sharing their workplace toilets with those same women. 
We all know that the culprit of that kind of stunt (in relation to any another social, religious, cultural group, age group, nationality, sexual orientation, social class etc that is not their own..) they wouldn’t even make it through the open plan office to get to their own desk if they showed up to work like that.
They’d get sent straight over to HR and get an immediate suspension for professional misconduct, if not sacked on the spot depending what they did.
What’s more you can bet that ALL of the colleagues in that workplace would rightly be fucking OUTRAGED at what this person was doing.
We’d all put in formal complaints to our managers and to HR about the person doing this and say we wouldn’t feel comfortable working on shifts or projects or wherever with them again because of their offensive views bringing the organisation into disrepute, misconduct and worrying lack of judgement making them a liability for us all with clients. Their career would be over with that office basically.
And notice the other difference that nobody would feel scared if they wanted to complain about what the culprit was doing. Whatever our background ourselves, we would all feel free to call it out and complain to HR straight away. None of us would expect to stand for that shit in the workplace.
But here because it’s only women... Bunce can call us sad TERFs for not congratulating him and he can do what he wants at work and get women’s awards and be on promotional videos for his company.
The chilling effect of this on professional women is horrendous. We shouldn’t have to stand for it. We should be able to complain. We shouldn’t even be put in this situation in the first place. 