By Cameron Robertson SINGER Lily Allen has branded Madonna "the most over-rated person in pop history". The pop star, who scored a number one with debut single Smile, reckons the 47-year-old Queen of Popis past her sell-by date. Lily, 21, said: "I haven't got anything against her at all, but I don't think any thing she's done since the early 80s has really been, like, 'Wow'. Advertisement