what is celebrity?

I know it's been asked by many, often by commentators or bloggers far more astute, but really, what kind of world do we live in where this happens? I'm watching telly last night when an ad comes on for the MTV Australia awards. Fair enough. So then, celebrity names start zooming at me, with the announcer in his announcy voice clearly calling out the celebs. Big names in the music industry from Australia and abroad fill my screen and my ears before... KIM KARDASHIAN (nope, that's probably not how you spell it, but I'm not going to add to her fame by googling how to spell her goddam name). So, we have serious music industry heavyweights, and someone whose claim to fame is

a. her buttocks

b. being Paris's former BFF

c. pee

Music credentials? Oh, yes. Twas music producer and Brandy's bro who supplied the p for c.