At Kelly Clarkson’s Chemistry: An Intimate Evening residency show in Las Vegas on Sunday, two men got hitched with the help of Kelly as a witness.

The couple, Marcello and Brian, shared that they’ve been together for 15 years and hoped to tie the knot with Kelly present. She was totally on board! Kelly looked toward a man standing next to the couple and said, “Say something!” She handed him the microphone and he started to officiate the wedding! Pretty good for being spontaneous and not knowing the couple. What a cool moment!

Cover photo courtesy of Charles Sykes/Invision/AP