When Chris Pratt finished filming his role as Peter Quill (aka Star-Lord) for Marvel's "Guardians of the Galaxy," he decided to hold on to his costume - not as a souvenir, but as a way to bring joy to others.

“I stole the jacket and some of the wardrobe so that, if this movie comes out and does what everyone hopes it can, I can follow the example of someone — say, like, a Russell Wilson — and go visit kids," he told Panzer TV. "If it was a big enough movie to where it would mean something to a kid who’s sick in the hospital for Peter Quill or Star-Lord to come visit them, I’ll do that. I think that’s awesome, man. That would give me real meaning for this movie, you know? Right now, it means high profile, cool jobs coming up, big press tour, and all the excitement of it all. But none of that really means anything. The coolest things would be that my son can one day see this, and that maybe I can go affect some kids in a positive way; be a good role model for them.”

Pratt took that opportunity yesterday, partnering with Marvel and the Children’s Miracle Network Hospitals for a special screening of "Guardians" at Los Angeles Children's Hospital for patients, families and staff. After the film was finished, Pratt emerged in full costume to the delight of the audience - signing autographs, handing out Guardians' swag, and letting kids try on his costume.

Afterwards, Pratt spent three hours touring the hospital and visiting with patients in the Bone Marrow Transplant Unit, the Children’s Center for Cancer and Blood Diseases and the Pediatric ICU. Pratt also reserved time for Dylan Prunty, nicknamed the "The Lego Kid" because of his huge love of all things legos. Prunty, who suffers from mitochondrial disorder, reportedly traded lines from "The Lego Movie" with Pratt, who voiced the film's main character. That. Is. Awesome. Well done, Chris.

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Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Chris Pratt dresses as Star-Lord for children's hospital visit
'Guardians of the Galaxy' star recently spent time with sick kids in Los Angeles signing autographs and handing out gifts.