While there's going to be a ton of Pauly D wannabes this year on Halloween, we just found out what the "Jersey Shore" star himself is going to dress as -- and it'll look something like this:

Pauly D, who will be DJing at Moon Nightclub at the Palms Casino Resort on Oct. 30, revealed he'll be "dressed head-to-toe in his best Justin Bieber impersonation and wearing his hair product-free for the first time in public."
Everyone loved it last time he let his hair down, so this is one costume we're definitely looking forward to seeing!