When it comes to the yeshiva buchorim’s style, they don’t necessarily have to wear the perry ellis suits, or barcelino hats, (I am most likely behind the times, and those brands are probably “obsolete” nowadays) but they should dress nicely (not pricy), because appearances & first impressions mean a lot for shidduchim, how they represent their schools, and how they appear to the non jewish onlookers. Dressing shlumpy, and raggedy, gives off a bad impression in different ways I had previously mentioned (& more). Looking put together, pressed, and fresh gives off a positive aura all around you.
-This is obviously just my personal opinion, not facts whatsoever. So please don’t take it to heart or be offended by it.