United Kingdom, Oct. 12 -- Kelly Clarkson has branded a New York storeowner a "liar" as their row continues.

The 44-year-old pop star, who has River, 12, and Remington, 10, with late ex-husband Brandon Blackstock, has fired back at Art of Play in Brooklyn as their bitter argument rolled on over the weekend.

The Since U Been Gone hitmaker had originally alleged that staff "looked at" her as if she "couldn't afford" their producers, comparing the exchange to Pretty Woman.

On Sunday (11.10.26) Art of Play responded: "Yesterday, Kelly Clarkson visited us in Brooklyn and inquired about buying 'Molly,' a one-of-a-kind singing and dancing bird automaton who plays an important role in the magic shows we host here.

"Molly is permanently attach...