Kylie Jenner's Halloween costume will put you in the mood to shake the room.
Cosmetics King Kylie had a convincing Dirrty-era Xtina ensemble on Saturday, which Christina Aguilera approved of. The singer reposted the look Sunday with the caption: "YAASSSSS"..... Killin it Kylie Jenner yes to dirrty 2016!! Get it girrrl!!!
Jenner wasn't the only famous person to slay on Halloweekend. Beyoncé knows when it comes to Halloween you have to Push It. With her mom, Tina Lawson, and her daughter, Blue Ivy, Bey assembled Salt-N-Pepa. Jay Z also rocked retro duds to fit his family’s theme.
Ellen DeGeneres donned a black and two-toned wig, larger than life bow, and costume she said she assembled from loofahs to transform into Sia for her Halloween show on Monday.
The host showed why she should be booked on Lip Sync Battle a.s.a.p. when she performed Chandelier with a little help from her bud, Heidi Klum. The Project Runway host dressed as frequenter of Sia’s music videos, Maddie Ziegler, and unleashed some very impressive moves.
Kelly Clarkson also put on a Sia wig and performance. Her a cappella version of Chandelier left us speechless.
We spotted more impressive looks over the weekend. Jacob Tremblay's friends may not have appreciated the actor's Halloween costume, but at least the adults recognized his fly ensemble.
The Room star attended his school dance dressed as Marty McFly from Back to the Future, complete with futuristic-looking shoes and a red puffer vest. Of course, he danced to his jam, Uptown Funk.
Colton Haynes was unrecognizable in prosthetics for his outrageous Miss Piggy costume.
Bette Midler brought back Winifred Sanderson.
Mindy Kaling did her best "Sully."
Katy Perry dressed as the candidate she voted for.
Amy Schumer and her boyfriend, Ben Hanisch dressed as Dustin and Eleven from Stranger Things.
Kourtney Kardashian dressed as a gruesome bride.
Nick Jonas and Demi Lovato went as The Scarecrow and Dorothy from The Wizard of Oz.
Here's a full look at her look.
Jenna Dewan Tatum was a sparkly unicorn.
Victoria Justice was Beetlejuice, Beetlejuice, Beetlejuice.
Taylor Lautner and Nina Dobrev both donned spiky, chlorine-tinted hair as Ryan Lochte.
Sofia Richie gave the green light to this race car driver costume and struck a pose with Paris Hilton.
And Martha Stewart was a deadly nurse.
If you're still trying to figure out what you're doing/wearing/seeing on Halloween, check out our list of recommendations.