4. Britney Spears
Why you'd date her: She used to be the sexiest woman on the planet (1998-2003), she's the 12th richest woman in entertainment (2007), you could be the man held responsible for 'Britney's amazing turnaround'.
Why you wouldn't: Bearing in mind her recent eccentric behaviour, you might also struggle to keep up with her regular nightclub attendances and you'd know that everyone else has seen your girlfriend's "secret garden".