What's The Most Perfect Superhero Uniform Of All Time?

It's hard to make skintight spandex and padding look good. Especially in live-action, but even in four-color comics, it can look just silly or weird. Last week, we surveyed the worst superhero costumes. But what's the best superhero costume of all time?

Please include a picture, comic-book cover or movie clip for your chosen costume. And please mention the name of the character, where he/she appears, and why the costume is so great. Thanks!

Top image: Captain America's World War II uniform is the perfect blend of military uniform and colorful superhero garb, which retains the "star-spangled banner" theme but looks like something you would actually wear into battle.