Chappell Roan With Noah Kahan, Cynthia Erivo With Ariana Grande & Kristen Bell With Savannah Bananas: A Weekend of Surprise Guests

On the new Billboard Pop Shop Podcast, Katie & Keith are talking about the many special pop treats at events across the world.

The singers performed several tracks from Wicked at The O2 on Sunday.

The singers performed several tracks from Wicked at The O2 on Sunday.

The singer invited her former co-star to perform during the latest stop on her "Eternal Sunshine" tour in London over the weekend.

The Wicked co-stars also sang a medley of “Get Happy" and "Happy Days Are Here Again" during Grande's show at the O2

The talented sopranos surprised the sold-out crowd at O2 Arena by singing Wicked anthem For Good as well as a medley of Get Happy and Happy Days Are Here Again

Cynthia Erivo joins Wicked co-star Ariana Grande for surprise O2 gig appearance  itv.com

Ariana Grande brought out Cynthia Erivo to perform at her Aug. 16 Eternal Sunshine stop at London’s O2. The “Wicked” stars sang “For Good” and “Happy Days” on the second night in the U.K. for Grande’s tour. Grande is currently on her Eternal Sunshine Tour, which shares a title with her seventh studio album. The…

For the first time in forever, Kristen Bell has both Frozen and baseball on the mind as she treated sports fans to a surprise performance from Princess Anna. On Saturday, the 2x Golden Globe nominee popped up in the stands of the Savannah Bananas game against the Indianapolis Clowns in Denver, where she sang her…