Preparing to Rock...!!

So, one of my good friends is having a Rockstar themed Karaoke night for her birthday this Saturday... I'm really looking forward to it (her Karaoke parties ALWAYS rock!)... but I can't decide which Rockstar to go as....

• An Aussie?
• A gal?
• Popstars are also allowed...
• Someone not too obvious...
• but also not too difficult to pull off
• I can't change my hair as I need a new job...
• however cosmetics are allowed

I would prefer to be someone I can impersonate at the mike too... Have to decide tomorrow... any suggestions?