London, Nov 18 (ANI): Pippa Middleton's party panning book 'Celebrate' is said to have sold even fewer copies in America after it shifted under 5,000 copies in Britain.
The 29-year-old socialite, whose book went on sale on October 25, managed to sell just 3,000 in America, the Daily Express reported.
The book, which is ranked 226 in Amazon's bestseller list, has fallen almost 50 places since last week despite its price being slashed by half to 12 pounds.
The poor sales may affect publishers Penguin, who is said to have paid a 400k-pound advance to Middleton. (ANI)