Over the weekend (April 2), Blake Shelton made the trip to San Diego, CA where he headlined the sold-out Boots in the Park concert. Fans anticipated a star-studded lineup including Brett Young, Carly Pearce, The Band Perry and more, but what they didn't expect was a surprise appearance by Shelton's other half.

Pop sensation Gwen Stefani joined her husband during his set, giving fans a heartfelt duet of their song, "Nobody But You."

"Did I say Gwen Stefani? I meant Gwen Shelton" Shelton announced to the crowd, earning a roar of excitement and laughter.

The "Just A Girl" singer sported a red and black fringe flannel with cutoff shorts and, of course, her cowboy boots as she and Shelton hugged it out on stage. 

Their chemistry radiates both on stage in front of thousands of people and off. With their busy schedules, it's not every day that the lovebirds get to perform together, so this was definitely a treat for fans.

Following their performance, Stefani made her way back to Burbank, CA for an appearance on The Ellen DeGeneres Show. She was there to promote her new makeup line, GXVE Beauty, but ended up reflecting on married life as their one-year anniversary approaches.

Ellen couldn't help but wonder where her invite to the wedding was after Stefani had previously told her she would be her maid of honor when she finally tied the knot with Shelton.

"COVID," Stefani responded honestly. "It got really small. I had this fantasy of building like bleachers, but it got smaller and smaller, and as you know, the Lord works in mysterious ways.

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