(1) This person really really needs the job. Probably is in a bad negotiation position, due to this urgent need.
(2) Are you here to impress people with looks, or with your skills?
(3) They take looks way more serious than they should, maybe not focussing enough on the technical side of things.
(4) Hopefully this is not an "EnTeRpRiSe software" developer, and if they are, hopefully they don't work on my team and if they are, hopefully my next up manager does not get blinded by fancy clothes, instead of technical reasoning.
That said, I would try to keep an open mind about the person, but they would be initially sorted into the category of managerial or close to management, rather than close to the other engineers, which is not a positive signal to send.