Kelly Clarkson 's daughter, River Rose, stunned fans when she stepped into the limelight on July 18, to sing a duet with her mom. In a move that mirror's Beyonce — whose children, Blue Ivy and Rumi tour with her — the American Idol alum surprised the audience at her Studio Sessions residency at The Colosseum at Caesars Palace in Las Vegas.

Kelly Clarkson kicked off her Las Vegas residency's first show with an apology to fans after postponing opening night last week: 'I'm so sorry. We can't help our bodies sometimes.'