CHICAGO (AP):  Chicago Cubs fans are waking up to a new reality: Their team is headed to the World Series for the first time in 71 years.

Many still-stunned fans took to social media Sunday morning to ask if they’d been dreaming and to catch up on the posts from famous Cubs fans.

Comedian and actor Bob Newhart posted a photo of himself, his grandchildren and the “W” flag they made for him.

Actor John Cusack posted two words last night along with a photo of the team celebrating at Wrigley Field. As he put it: “It’s. Done.”

Chicago Mayor Rahm Emanuel issued a statement Saturday night celebrating the pennant win. He says: “The fun continues in Cleveland on Tuesday night.”

First lady Michelle Obama is congratulating her hometown Chicago Cubs after the team clinched an appearance in the World Series.

The Chicago native on Sunday morning tweeted: “Way to go Cubs!!” She then recalled her father, saying “My Dad is the reason I’m a true Cubs fans. He’d be so proud!”

She signed off on the tweet from her @FLOTUS account with her personal signature, “-mo,” meaning she wrote the message herself.

President Barack Obama is a well-known fan of the Cubs’ crosstown rivals, the Chicago White Sox.

Large crowds of people hit the streets outside Wrigley Field on Saturday night after the game.

A majority of the fans celebrated peacefully, with many taking selfies in front of the stadium. Police say one person was arrested after climbing a traffic pole.

Longtime fan Brian Dusza was at the game. He says he never thought he’d see such a win, adding: “I can’t even describe what I’m feeling.”

The Cubs face the Cleveland Indians in Game 1 on Tuesday.