Beyonce Knowles' IRREPLACEABLE has notched up a ninth week at the top of the US singles chart. The hit, which first hit number one in early December (06), has kept Fall Out Boy's THIS AIN'T A SCENE, IT'S AN ARMS RACE at number two and Nelly Furtado's SAY IT RIGHT at number three for a second successive week. The highest debut on the new Billboard chart belongs to Brit Lily Allen, whose SMILE enters the countdown at number 83.