Kristina and David Green's festive twist to their child's gender reveal was posted to Facebook on December 13.
"Is it a boy? Is it a girl?" the lights can be seen flashing, before a countdown to the words "it's a girl" complete with pink lights.
"We happened to find out the gender of our baby while we were putting up the lights and thought that it would be a great way to tell our family of the gender of our new arrival," Kristina Green told Storyful.
During the show "you could feel our family's anticipation and excitement," she added.