The 21-year-old Maleficent: Mistress of Evil actress shared the clip of herself and the 25-year-old Once Upon a Time In Hollywood star on Instagram on Saturday (October 19).
In the clip, Dakota – in a furry pink top and headpiece with cat ears – does her makeup as a younger Elle goes through her makeup bag.
“What is this?” Elle asks, holding up an eyebrow brush.
“It’s for your eyebrows!” Dakota Fanning replies sternly. “And you’re not allowed to do it. Go get your wig back on!”
Elle then proceeds to put on her big red wig, proclaiming, “I did it.”
“Getting ready for a girl’s night out with @dakotafanning #halloween #gogetyourwigbackon,” Elle Fanning captioned the video.
Watch it below!