The adorable team-up on the 11-year-old's favorite song from her mom's catalog isn't the first time they've sung the track together on stage.

Kelly Clarkson surprised fans in Las Vegas by bringing out her 11-year-old daughter, River Rose, for a sweet duet of 'Heartbeat Song' during the second weekend of her 'Studio Sessions' residency. The mother-daughter duo wore coordinating outfits and had the crowd smiling and singing along.

"Last night we had a very special guest - my daughter River Rose joined us for ‘Heartbeat Song,'" Clarkson wrote on Instagram. "It's her favorite song." River, now 11 years old,