Britney Spears: 'Femme Fatale'

Let's be honest, Britney's last album Circus wasn't bad by your average artist's standards - 'Womanizer', 'Shattered Glass' and 'Unusual You' anyone? - but as a follow-up to the near-perfect Blackout, we don't mind telling you that we were left somewhat underwhelmed. Given that she's spent two-and-a-bit years working on a follow-up - one that she claims is built "for the clubs" and is her "