Party hairstyles should really be about individual style. These three women in this photo have very different hairdos and outfits. They all look sexy in their own way. Retro colors and patterns are in right now. Bold jewelry and big hoop earrings are fun and definitely hot. The main thing is to feel good about you and to think and feel that you look great and others will have to agree.
You may want to see what the celebrities are wearing or take a look at some of the retro categories like 70s and 80s or even the 60s. If you want something a little bit dressy then take a gander at the formals.