Photos:: ‘American Idol’ stars then and now

Left: Chris Daughtry at Staple Centers during the American Idols Live Tour 2006.

Right: Daughtry attends the world premiere of Marvel’s “Avengers: Age of Ultron” on April 13, 2015.

Left: Jordin Sparks reacts to being announced as the winner of “American Idol” on May 23, 2007.

Right: Sparks performs for Boise State fans after an NCAA spring football scrimmage on April 11, 2015.

Left: “American Idol” finalist Katherine McPhee performs during the Season 5 finale on May 24, 2006, at the Kodak Theatre in Los Angeles.

Right: McPhee attends the Giuseppe Zanotti Beverly Hills store opening on April 14, 2015.

Left: Season 11 winner Phillip Phillips performs on “American Idol” on May 22, 2012.

Right: Phillips at the Hollywood Bowl as the opening act to headliner John Mayer on Oct. 5, 2013.

Left: Kellie Pickler performs onstage during the “American Idol” Season 5 finale on May 24, 2006.

Right: Pickler arrives at the 50th annual Academy of Country Music Awards on April 19, 2015.

Left: Jennifer Hudson at a 2004 taping of “American Idol” in Season 3.

Right: Hudson onstage during the 2015 TV Land Awards at Saban Theatre on April 11, 2015 in Beverly Hills.

Left: Carrie Underwood performs on “American Idol” during semifinals for Season 4 in 2005.

Right: Underwood headlines at Staples Center in Los Angeles on Oct. 16, 2012.

Left: Kelly Clarkson, the first winner of “American Idol,” performs Aug. 27, 2002.

Right: Clarkson speaks onstage during the 50th Academy of Country Music Awards on April 19, 2015.