Kelly Clarkson accused “American Idol” of “lying” about the $1 million check that she was supposed to receive after becoming the singing competition’s very first winner.

The 43-year-old “Since U Been Gone” songstress made the bombshell claim during Tuesday’s episode of “The Kelly Clarkson Show,” where she was joined by “Harry Potter” actor Daniel Radcliffe and reality star Rob Rausch.

Clarkson brought up the topic while discussing Rausch’s $220,800 winnings from Season 4 of “The Traitors” — which he revealed he still hasn’t received.