So you though that Christina Aguilera was just a former Mickey Mouse club member turn pop singer/stripper, turn reality show judge, huh? Oh how wrong you are. I mean, you're right, she has had more metamorphosis over the years than Spider-Man, but she's also pretty good at impressions. Namely other female pop singers. 

Source: thevoice

This warrants another reminder that not only can speak like Britney Spears at maximum ditziness, but she can sing like her too.

Source: tonightshow

So, should a comet hit the Earth and ONLY kill female pop stars, but somehow leave Christina Aguilera unscathed -- it's all good.