The country crooner just completed his first-ever Las Vegas residency, made even more memorable with a special duet with his wife.

Blake Shelton & Gwen Stefani

Gwen Stefani and Blake Shelton are certain they could be happy anywhere so long as they’re with each other.

Their most recent travels once again proved this theory, as Stefani joined Shelton for his six-night concert series in Las Vegas.

The “Just a Girl” singer shared candid clips of the moments leading up to and after her surprise onstage appearance to perform a live version of the couple’s “Happy Anywhere” duet from Shelton’s 2021 album, Body Language. She even admitted that she still gets nervous to perform for fans after all these years.

“I thought I was gonna forget the lyrics!” Stefani, 55, said in one part of the video, shot from the side of the stage. “I get scared I’m gonna forget the words.”

“Vegas was too much fun ❤️‍🔥,” she captioned the lively montage uploaded to her Instagram grid on Wednesday, Feb. 19—a few days after Shelton wrapped up his shows in Sin City.