Feminists

That if you are really distracted by a shoulder, back, leg, bra strap, belly button, etc. Then "boys will be boys"...forever. You will have no hope of becoming a man, of maturing to a level which might contribute to, or make a difference to our society. It is alright to recognize and admire the physical beauty in another (of either sex). It is childish to become so obsessed by it you ability to productively function is impaired.
Establishing a dress code targeting women's apparel to placate an anticipated (imagined) over reaction by the local males is equally sexist and displays child like thinking.

This is coming from a man with a severe cartoon habit (Manga and Anime, I'm proud to admit).