We've seen Ellen DeGeneres dress up for Halloween as Nicki Minaj, Amal Clooney and Sofia Vergara in the past. This year, she's at it again with another spot on and hysterical celebrity costume. The 57-year-old talk show host took this opportunity to introduce the world to the newest "Keeping Up with the Kardashians" cast member, their lesser-known, yet just as curvy sister, "Karla Kardashian."

"I bet you're wondering who I am," DeGeneres said to the audience during Friday's show. "And if you are wondering who I am, you obviously didn't see the latest ad for 'Keeping Up with the Kardashians,' so in case you missed it, here it is."

She then played a version of the new ad — only this time featuring Karla. "That's right, I'm the lesser-known Kardashian sister," she explained. "My name is Karla Kardashian, with a K 'cause we're known for our double Ks."

"These are double Ks too," she said as she pointed to her fake cleavage. "I'm a big part of the family, but for some reason I've always been cut out of the show.... And I understand because they only have, like, 12 reality shows that are on TV, like, 80 hours a week, but you know, they didn't have room for me."

Watch the hilarious clip from "The Ellen Show" below!