Lily Allen shilling for Sure? Not quite. The cheeky folks at ad agency Lowe Worldwide are using “Knock ‘Em Out”‘s infectious Professor Longhair sample for a sporty new Rexona/Sure/Degree spot. Not that Lily has anything against antiperspirant (one hopes), but seems an underhanded way to trade on her popularity, innit? Of course none of this is illegal — Lowe licensed Longhair’s version of Earl King Johnson’s “Big Chief” from publisher Shirley’s Music (we did research!) — but bet your trainers Lil’ll be bitching about it on MySpace.