When I go parties so long as it's casual I dress pretty much the same as I always dress which is normally a fitted suit shirt and jeans. I'll generally have my sleeves rolled up to the elbow regardless. Boots or trainers finish the look depending on when, where and what type the party is. I will occassionally if not expecting to go out I'll be wearing just a T-shirt but I really don't usually go out anywhere other than work or shopping in t-shirts. Formal parties see me wear a suit normally in black and the shirt colour and tie depends on the type of party so like I wouldn't wear a black shirt and tie to a wedding, I'll wear the purple shirt and tie. Dark colours suit me better.