Best and worst superhero costumes

Captain America's costume is based on a WW II airman's suit. But other comic-book movies have featured capes, cat suits, and, weirdly, Bat-nipples.

In the 2011 film "Captain America," Chris Evans' costume is meant to resemble a World War II airman's jumpsuit, director Joe Johnston told Entertainment Weekly. It's modest and practical, a far cry from the tight Spandex sported by many heroes. Evans told MTV News the costume was "not comfortable" but that the redesigned version he wears in "The Avengers" is more more modern and "looks fantastic."

"Thor" isn't just a superhero, he's a Norse god, and his armor and cape reflect that. The L.A. Times reported that Chris Hemsworth was so afraid he wouldn't look strong enough to play the role that he worked out too much -- and for a while, his costume was too tight. He reportedly backed off on the workouts and his costume was altered to fit.

January Jones looks breathtakingly cold as Emma Frost in 2011's "X-Men: First Class." Jones told MTV her favorite costume from the film involved a fur cape.

In 2011's "Green Lantern," part of Ryan Reynolds' glowing costume was CGI-generated, a decision which did not delight fanboys.

Anyone could be inside Robert Downey Jr's "Iron Man" costume, but it's still recognized as one of the cooler hero costumes in recent years. You may also see it at your doorstep come October -- it's a popular Halloween choice.

Some superheroes don't really need Spandex. Seth Rogen pretty much just donned a mask to play 2011's "Green Hornet."

We're used to seeing Spider-Man in red, white and blue, but in 2007's "Spider-Man 3," Peter Parker's suit mysteriously changes to black, bringing out the dark side of the hero.

In 2000's "X-Men," Mystique's blue skin sets her apart from the other heroes.

Yes, that's George Clooney in the costume on the left, starring in 1997's "Batman & Robin." For some reason, the costume sported visible nipples, one of the oddest choices in superhero costuming ever. In the photo at right, Michael Keaton wears a more traditional batsuit in 1989's "Batman."

Some of the more notable comic-book costumes for women are that of slinky, sexy "Catwoman." Here, Michelle Pfeiffer plays her in 1992's "Batman Returns," while Halle Berry shows a little more skin in 2004's "Catwoman." Obviously, the costume designer took the words "cat suit" to heart.

Few superhero costumes stand the test of time as well as that worn by the late Christopher Reeve in 1978's "Superman."