When hitting the streets this Halloween, it’s likely that amongst the pirates, robots, Chewbaccas and wizards you might find a character or two from My Little Pony Friendship Is Magic. But what will the well-hooved ponies be wearing for their own costumes this Halloween season? Now we know.

In Saturday’s special Halloween-themed episode of the animated show beloved by bronies, Pinkie Pie, Twilight Sparkle, Rainbow Dash and friends gather for a super-spooky night in full costume. But just as their fun is getting under way, they are nearly scared to death when the Night Mare Moon herself — Princess Luna — appears in the sky.

Luna arrives in Ponyville desperate to overhaul her frightening public image, but doesn’t get off to the best of starts when she descends from the sky and sends all the ponies screaming and running for their lives.

Check out what happens during her arrival in the exclusive preview clip above and then click through the gallery to see all the ponies in their cutie costumes. The Halloween episode of My Little Pony Friendship Is Magic airs Saturday at 10 a.m. Eastern on the Hub TV network.

Images courtesy of the Hub