March of Dimes volunteers and hospital nurses made the tiny costumes, most of which were superhero-themed. Original image has been replaced. Credit: Mashable Original image has been replaced.

Newly revealed Superman Halloween costumes reveal a closer look at Hawkgirl's organic wings, the "JL" logo on her, Green Lantern, and Mister Terrific's costumes, and the mysterious Engineer. Check it ...

Here are 32 excellent MCU superhero costumes we just can’t stop thinking ... all make this a wild fit, as the kids would say.