"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,

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.

Kelly Clarkson turned her Friday night (July 18) performance at the Colosseum at Caesars Palace into a family affair. During her Studio Sessions residency gig, the talk show host and pop superstar invited 11-year-old daughter River Rose out to join her on stage for a very special duet.