Ellen DeGeneres has done it again!

The talk show host shows off her Sia-inspired Halloween costume on Monday's "The Ellen DeGeneres Show" and puts on one killer performance of the singer's hit single "Chandelier."

Rocking a black puffy dress, black leggings and the "Elastic Heart" singer's signature wig, Ellen looked just like the Australian pop star.

"As you can see I'm Sia," she says in the clip. "And I can't really see ya."

"So I made this costume myself," she explains. "I found some old loofahs backstage and it was not that hard to make. And the bow was from a car I gave away recently."

1031_sia_insetLaunch GalleryMichael Rozman / Warner Bros. Halloween 2016 — Celeb Sightings

DeGeneres goes on to explain what she and the singer have in common, noting that Sia's Australian and that she married an Australian. "We both like to swing from a chandelier ... which is why I'm no longer welcome at Bed Bath & Beyond," she jokes.

Ellen even enlists model Heidi Klum to play the part of Sia's dancer Maddie Ziegler -- make sure to check out the clip above to see Ellen and Klum's killer performance!

Later on the show, Ellen shows what happened when she sent her producer along with Ariana Grande to a very spooky haunted house. Make sure to check out the clip above to see the duo's terrifying experience!

What do you think of Ellen's costume? Sound off below and check out the gallery above to see more celebrity Halloween sightings!

For more of today's hottest headlines, check out the video below!

Hot Videos