Who is the Queen of the Pop?

Kylie or Madonna, who do you prefer? Kylie has just announced the release of her comeback single, Bizarre-backed 2 Hearts, on 5 November. Critics have pointed out that the single's artwork is reminiscent of Madonna's True Blue album cover. The two icons are set to go head-to-head in the charts when their albums are released within weeks of each other in November. Who deserves the title Queen of Pop? Have your say.