Clothes make the man and the suit makes the superhero.
One of the many disappointments of Green Lantern is Ryan Reynolds' Lanternsuit, a CGI-unitard superimposed over his (mostly) nekkid body, more Cirque de Soleil than Superhero. Lacks the mystery of of the Batsuit, the Transformers chic of the Iron Man rig, and the cape-and-tights beefcake of Superman's outfit.
Got me thinking: Which are the most effective Super suits?
And for the best analysis of what accessory a superhero does not need, here's a link to Edna E. Mode's "No Capes" monologue from The Incredibles.