Latino pop hunk Enrique Iglesias has refused to perform at his wedding to tennis ace Anna Kournikova - insisting the performance would be "s**t". The Hero singer won't confirm he is set to marry the Russian star - but is adamant he will not be providing the entertainment when the nuptials finally take place. He says, "I certainly wouldn't sing at our wedding. It would be a bit of a s**tty wedding if I did." However the Spanish heart-throb concedes he is happy to display his singing talents at other peoples' weddings. He says, "I would never charge to sing at someone's wedding. If a friend asked, I would agree to do it for free."