Why are the other husbands looking?
They’re human beings with a yetzer hora.
If the rabbanim want the women to dress more tzniusly, they should talk to the men about shmiras einayim
They want both, and many do in fact talk about shmiras einayim.
Men shouldn’t use how women dress as an excuse to not practice shmiras einayim, and women shouldn’t use men not overcoming their yetzer hora as an excuse to be machshil them.