^Actually I have mixed feelings about the movies' Spidey costume. Sure, it looks snazzy, but it's not remotely credible as something a teenager whipped up by himself. Of course you wouldn't want something too realistic within those parameters, because it would look like a cheap Halloween costume, but they went too far in the other direction.
I think TV and movies these days always overthink superhero costumes. They're afraid of making them look like just fancy leotards, but there's a reason why acrobats and weightlifters wear leotards. Superheroes would need light costumes that granted them freedom of movement. Sure, it makes sense that they'd need some kind of body armor too, but from a design standpoint there seems to be too much fear of simplicity.