Lucy Jo of Alabama wore a Frozen-themed Queen Elsa dress, while her sister, Norah, took that promise and ran with it.
"OK, Lucy Jo wanted to wear a costume to bed instead of jammies. So she picked out Elsa 'cause it's kinda like jammies, it looks comfy. Nora wanted a costume too. She's a hot dog," said the girl's father, Micah Clem.
Clem posted a clip of his daughters' reactions to the viral video on Instagram on Friday.
Not all heroes wear capes. Some wear hot dog costumes.