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P Diddy was reportedly left fuming after a young designer failed to decorate New York club Mansion NYC to his specifications for his recent birthday celebrations.

The Bad Boy Records boss turned 39 on Tuesday but decided to turn his party into a joint celebration to mark Barack Obama becoming the new U.S. President-elect.

But according to the New York Post's PageSix, he became infuriated with a designer hired to deck out the Chelsea club - and allegedly demanded a refund.

A source tells the publication, "He was given a budget of $7,000 and 12 hours to create an all-white decor, including 1,000 white roses, blow-ups of Diddy and Barack Obama, and $2,000 of white fabric.

"Diddy declared it dreadful and went into a major hissy fit, screaming, 'Show me the receipts!' and 'Get the money back!' to his assistant.

"Then he began ripping the fabric off the walls saying he hated it. He berated the poor young decorator to the point that the guy gave back $2,000 of the money he had spent."