For something like a costume party, you could go as a Teenage-Mutant-Ninja-Turtle. Not entirely a chitinous exoskeleton, but moving along in the right direction.
Suggestion: The costume could be heavy. Implement a built-in sitting option by making the tail rigid. Then all you have to do is balance on it, (lean forward).
You could "love" being a Turtle!
Also: Be the hit of the party by offering to freshen someone's drink. Open a panel on the stomach of the costume and put out a couple of ice cubes and some bubbly. It would keep you cool in the costume too.
I need another suggestion. You’d have to know the crowd. It’s not a costume party. I await your input w/baited breath (and you know what that does to my pH, so *hurry*!)
Are you a Turtle?