By Brandi Fowler
Updated Oct 09, 2017 @ 5:45 pm

Jessica Simpson's adorable little ones know a thing or two about getting into the Halloween spirit.

Maxwell Drew, 5, and Ace Knute, 4, put on their best spooky faces as they posed for a photo near the pumpkins they were decorating, with Max even hopping up on a chair barefoot in her printed nightgown for an added effect.

Ace, meanwhile, formed his hands into claws and opened his mouth wide as he sat next to his sister in a printed shirt and orange "Drill" emblazoned baseball cap.

"I ain't afraid of no ghost!! #October #Halloween #Ghostbusters #mykidsareeverything," the designer captioned the photo Monday.

The pair had illuminated pumpkins sitting in front of them on a wooden table, each with a carved out creepy face.

Considering Max and Ace are already getting their Halloween decorations ready, there's no doubt that these two have their eyes on some major trick-or-treating. We can't wait to see what they dress up as for Halloween.