An American pop musician whose entire gimmick and persona is based on sleaziness, hedonism, and partying to potentially lethal extremes. Her music is a love-it-or-hate-it deal. There's nothing in between. At the risk of betraying my feelings about her music, if crotch lice had a soundtrack, it would be Ke$ha.
All that said, celebrities generally don't get much access to magic. Consequently, there will be pressure to always do more. I personally advocate the less-is-more route almost all the time, so resist the urge to over-do it. Remember also that famous people are used to having others give in to their requests almost immediately. It's one of the downsides of fame that nobody talks about. You'll make more of an impression if you resolutely do your own thing and perform on your own terms. If nothing else, there are 8 very important words to establishing audience control and positioning yourself as the authority:
"Move over here, you'll get a better view."