The hottest female popstar of all time?

Okay most female popstars are like inanimate objects that are controlled by their handlers and dont have much creative contol over their work,but the only good thing about them is that many of them are considerably hot.So who's the hottest one of all time?JLo?Beyonce?Christina Aguilera?Katy Perry?Shakira?Kylie Minogue?Anyone else?