Fact: Nobody does Halloween like MTV stars. From the sexy/scary "Jersey Shore" crowd to the always-flawless "Hills" crew to the aww-dorable "Teen Mom" kids, all your fave stars dressed to impress last night. Check out our roundup of all the best, must-see costumes below!
Molly Tarlov as a lion
Jillian Rose Reed as Animal from The Muppets
Nikki Deloach as a dalmation
Tyler Posey as a "pothead"
Jenelle Evans and son Jace as zombies plus son Kaiser as Mickey Mouse
Chelsea Houska's daughter Aubree as a cowgirl
Kailyn Lowry's son Lincoln as Waldo
Maci Bookout and son Bentley as a Teenage Mutant Ninja Turtle
Lauren Conrad as a mermaid
Lo Bosworth as a skeleton
Brody Jenner as Elvis and Kaitlynn Carter as an indian
Sammi Giancola as a devil
Deena Cortese as Minnie Mouse
Pauly D as a really scary dude
Vinny Guadagnino as a demon
Angelina Pivarnick as Chuckie
Kenny Santucci and Evan Starkman as a monkey
Johnny Bananas as Wolverine
Cara Maria as Tonto
Tell us: Whose costume are you totally going to copy next year? Sound off in the comments below!