Clarkson released the deluxe edition of Chemistry on Friday (September 22). The extended project, now 22 tracks, includes a song featuring vocals from her 9-year-old daughter, River Rose. Clarkson’s eldest child joins her superstar mother on “you don’t make me cry.”

Clarkson rocked a sleek all-black look — a long blazer with sky-high boots and lacy accents, complete with shimmering jewelry pieces — when she took the stage at the iHeartRadio Music Festival. She closed her set with one of her most iconic his throughout her career, prompting an epic singalong with the crowd: “Since U Been Gone,” an empowering anthem that appeared on her 12-track Breakaway album in 2004.

Notably, Clarkson made a lyric swap at the end of “Since U Been Gone,” singing: “I’m so happy now that you’re gone.” It's not the first time, however, that the Texas-born megastar has made changes to the lyrics of her songs on stage. Last month, for example, Clarkson put a new spin on “Piece By Piece” during her Las Vegas residency, making a few changes to the 2015 ballad following her divorce.

Other artists to take the stage at the two-night, multi-genre iHeartRadio Music Festival this year include Kane Brown, Foo Fighters, Fall Out Boy, Lil Wayne, Lenny Kravitz, Miguel, Public Enemy, Sheryl Crow, Tim McGraw, Thirty Seconds to Mars, Travis Scott and more.

If you missed any of this year’s iHeartRadio Music Festival, or just want to relive the weekend, you can watch all of the best moments on demand on Hulu from October 10 through October 31.

On-Air Schedule

Ella Palardi