Blake Shelton and  Gwen Stefani gave a surprise performance together on their two week wedding anniversary!

The country superstar, 45, and No Doubt singer, 51, celebrated their two week wedding anniversary with a surprise performance during Country Thunder Music Festival in Twin Lakes, Wisconsin on Sunday (July 18). While Shelton was scheduled to headline the Sunday night event, Stefani was not billed but Shelton surprised fans with his a performance alongside his beautiful wife.

The newlyweds performed their chart-topping duets, including "Nobody But You" and "Happy Anywhere," in addition to their duets, the couple also performed No Doubt's "Don't Speak."

"That's my wife and best friend, Gwen Stefani everybody," Shelton gushed as his wife, Stefani, entered the stage. 

"Gwen Shelton everybody," Shelton said, before the couple shared a kiss and the crowd erupted into a cheering frenzy.

After six years together, the "Happy Anywhere" singers exchanged vows during an intimate ceremony in front of their closest family and friends. The Carson Daly-officiated ceremony took place inside a chapel on Shelton's ranch, built exclusively for the superstar couple to say their "I Do's."

Additionally, Shelton's Friends And Heroes Tour kicks off later this summer on August 18 in Nebraska and will run through October. The country hitmaker's tour comes in support of his latest album, Body Language, which was released earlier this year. The 12-track project includes his 28th No. 1 single "Happy Anywhere" and his recent single "Minimum Wage."

It's unclear if Stefani will be joining Shelton on the road for his upcoming trek, but fans are hoping that he brings her out during his shows for a stripped down acoustic performance, similar to what fans got to witness at Ole Red during rehearsals.