Preview Kelly Clarkson and Michael Bublé's performances for the iHeartRadio Christmas special

It's starting to look like Christmas!

On Tuesday, iHeartRadio shared clips from its upcoming iHeartRadio Christmas special with PEOPLE – and they include appearances from The Christmas Guy himself, Michael Bublé and Kelly Clarkson!

Starting with 46-year-old Bublé, the singer is accompanied by a band as he sings a rendition of the classic “Let It Snow” and later jams along to his bassist’s solo.

Meanwhile, 39-year-old Clarkson appears on a large stage in a sparkling dress and passionately sings her Christmas song “Merry Christmas Baby” from her current album. When Christmas comes.

Trae Patton/NBC/NBCU Photo Bank via Getty; Richard Dobson/Newspix via Getty Kelly Clarkson and Michael Buble

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The iHeartRadio Holiday Special, hosted by Mario Lopez, airs Wednesday at 7 p.m. EST. The show will also feature performances by Train and Pentatonix.

Viewers can tune in via iHeartRadio’s YouTube or Facebook pages, as well as the iHeartRadio app.

Earlier this month, iHeartRadio ushered in the holiday season by switching its radio stations to exclusively Christmas music until Christmas Day.

“Our listeners always eagerly await the day when our stations switch to Christmas music,” said Tom Poleman, chief programming officer at iHeartMedia. “Kelly Clarkson, Michael Bublé, Train and Pentatonix have some of the best songs of the holiday season and we're excited to have them on our show.”

Last week, the singer of “Haven't Met You Yet” released a deluxe version of his hit album Christmasin honor of its 10th anniversary.

Bublé will also star in a brand new NBC Christmas special on December 6th called Michael Bublé's Christmas in the City.

During the special, Bublé will head to Rockefeller Center's Studio 8H with the help of some special guests for an evening of comedy, music and Christmas spirit.

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Meanwhile, Clarkson will also be spreading her own Christmas spirit on December 1st when she hosts Kelly Clarkson presents: When Christmas Comesthe “holiday spectacle”.

Special guests include Brett Eldredge, Ariana Grande, Jay Leno, Melissa McCarthy, Leslie Odom Jr., Amy Poehler and Santa Claus!

“People celebrate the holidays in different ways and that's the inspiration behind the original songs and curated classics heard in this special,” Clarkson said in a statement earlier this month. “No matter what your heart is feeling this holiday season, I hope this hour brings you joy and happiness right where you are.”