Hospitalized newborns at an Illinois neonatal intensive care unit are celebrating their first-ever Halloweens in style.

Advocate Children’s Hospital, located in Chicago’s suburbs, posted pictures of their tiny patients dressed up in Halloween outfits on Wednesday. The infants were dolled up by their parents as part of a contest.

“Parents with babies in our neonatal intensive care units (NICUs) across Chicagoland are getting into the Halloween spirit!” the Facebook post read.

“It’s time to VOTE for your favorite in our annual Advocate Children’s Hospital NICU Halloween Costume Bash,” the hospital added, asking Facebook users to vote by liking their favorite pictures.

TOP BABY NAMES FOR 2022: A FEW FUN PREDICTIONS HERE 

Advocate Children's Hospital is holding a Halloween costume contest for their intensive care patients.

Advocate Children’s Hospital is holding a Halloween costume contest for their intensive care patients. (Advocate Children’s Hospital via Facebook)

“We think they are ALL winners!” the post concluded.

Pictures show the babies yawning and sleeping in adorable costumes, ranging from superheroes to Disney characters to insects and animals. Many of the miniature costumes appeared hand-knit due to the youngsters’ small statures.

Some of the sleeping infants were dressed as Wonder Woman and Batman, while others were dressed as caterpillars and scuba divers. Some of the captions described the children’s medical conditions and the meaning behind their costumes.