Not sure what the chuckle is.
Do people not know what approve means?
If my GF gets a haircut, I may not approve of her new style and there is nothing I can do about that. My like or dislike is, in most cases not a choice.
Now I specifically said, my approval is not required by her nor something that has to matter to her. It is simply my opinion.
Are you guys so hen pecked that you think men are not allowed to have opinions when it comes to women? That the mere act of liking a new hair cut or not doing so is something men should NEVER do without the women's permission or is there something else I am missing why you think it is problematic for a man to like or not like something their SO might wear?