What to wear to International Spa and Beauty expo?

I will be going to the Sydney International Spa and Beauty expo very soon and the pondering question of what to wear still gets to me. However as this is not a fashion related event whatsoever with some fashion faces being perhaps those of ‘Napoleon Perdis’ and the randomly expected M.A.C cosmetics counter here and there, I really don’t know what the supposed ‘beauty girls’ wear to events like this. I mean, to frock or not to frock? I don’t work in beauty and don’t aspire to work in beauty so what to wear when one works in beauty is a question which I am hoping to find the answer to. I read in a blog that “beauty girls are like Lauren Conrad from the Hills who are polished but it’s because they just wear a chic dress or something similar. They are the beauty girls after all.” So from that one sentence and a bit, I instantly get the image of a magazine beauty editor who adorns herself in the likes of Mimco hair accessories and strapless One Teaspoon and Tigerlily dresses accompanied with an awesome (fake) tan and a seemingly natural glow and some pastel lip gloss…not that great an impression but then I could be completely wrong as well. I’m personally going for a draped Grecian-inspired dress and a pair of awesome over the top statement heels and some bangles to accesorise with not to forget the fake tan and super gorgeous red lipstick. Are there any beauty divas out there? What do you think?