Just like Kim, I love a fancy dress party. There's no end to the creative ideas for costumes and outfits.
When I was younger, I'd devote a lot of time, money and effort into clubbing and dressing up. Here's some of the cooler fancy dress themes I've encountered along the way.
Fantasy - The whole point of dressing up is exploring your fantasies!
Body Art - A relatively cheap option, and very cool if done right.
Berlin Kabaret - Nothing beats partying like you're in pre-WWII Weimar Republic. Even Liza Minnelli was cool back then...
Boudoir - This is a great theme if you're looking to host an "intimate" and decadent event with lots of feathers, masks, and risque outfits.
Moulin Rouge/Kit Kat Kabaret - Great excuse to get the absinthe-flowing; this theme is all about top hats & tails, feathers & frills and breathtaking (and breath restricting) corsets.
Venice Carnival - There's something really magical and mysterious about Venice during carnival, and this makes an awesome fancy-dress theme too.
Uniform - Everyone loves a uniform. That's why pilots make such popular dinner guests...
Medical - Nurse and doctor outfits are standard fancy dress fare. Spruce things up with a latex take on an old classic.
Militaria - This is kind of a spin off from the whole "uniform" theme, but I think it deserves its own mention due to some of the creative military outfits that have been worn throughout history.
Circus Side Show - This is a theme that I really love. When people think 'circus' - they tend to think clowns...
However, there's so much scope with circus sideshows that you're really spoilt for choice. My favorite sideshow performers are a duo called The Baron and Missy Macabre, and they're perfect inspiration for anyone that wants to do "circus" without the big shoes.