Kelly Clarkson used her final Las Vegas residency show to poke fun at one of her earliest career missteps: the 2003 movie "From Justin to Kelly," which she still won't let her own children watch.

Her kids, River Rose, 12, and Remington, 10, are banned from the film, she told the crowd, calling it "s---" and joking she was "contractually obligated" to make it after winning the inaugural season of "American Idol," according to Fox News.

The film, co-starring Justin Guarini, was panned by critics on release and has since become a punchline Clarkson herself regularly revisits.