Ellie Kemper is taking over Monday’s episode of “The Ellen DeGeneres”.

The “Unbreakable Kimmy Schmidt” star is now a season-pro at hosting with this being her third time.

Kemper brought out her “The Office” co-stars, Jenna Fischer and Angela Kinsey” for a “surreal” mini-reunion.

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They spoke about how Fischer used to make ornaments with the cast picture to hand out at Christmas but stopped around season five because she thought people were getting tired of them.

“I saved them all,” Kinsey revealed. “I have a lot of photos of myself on the tree, thanks to you.”

The trio also said they couldn’t believe how the popularity of “The Office” has risen over the past years.

“I was at the airport and there was a really cute girl in a jumpsuit. Like a big boxy jumpsuit, it was sort of an odd fitting jumpsuit and she came up to me and was like ‘I love ‘The Office’ can we take a picture’,” Kinsey recalled. Shortly after her Instagram went crazy.

“My Instagram went crazy because this girl named Billie Eilish posted a picture of her and I. She was so sweet,” Kinsey added while admitting she had no clue who Eilish was.

“I’m a dinosaur, but I Googled her and she is fantastic. A very talented young lady.”

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Fischer added that she also had no clue who the “Bad Guy” singer was.

Later on the show, Idina Menzel visited Kemper to promote “Uncut Gems” and sing “Sleigh Ride” off her album Christmas: A Season of Love.