There are few better excuses to dress up and have fun than the birthday of a good friend. Instead of preparing a soup-to-nuts dinner, keep it easy by throwing a cocktail party with a finger-food menu. When it's time for the cake (or cupcakes, in this case), bestow a handcrafted crown upon the honoree, and be sure to snap some photos—she'll want to remember this party long after she blows out the candles.