United Kingdom, Oct. 14 -- Kelly Clarkson has caused the cost of an animatronic bird to rise to $15 million.

The Since U Been Gone hitmaker has been embroiled in a public row with Art of Play in Brooklyn, and now the curiosity shop's co-owner Adam Rubin has claimed the previously not-for-sale mascot is available at a massive price.

He told New York magazine's Curbed: "As you've noticed, we've raised the price due to popular demand. It now costs $15 million."

Before the latest drama, other customers had inquired about Molly the bird.

The store added a $15,000 price tag to help the artisan creator Bliss Kolb gauge any "serious interest".

Over the weekend, Kelly ranted online about her experience enquiring about the item in the store, c...