When I was a kid, whatever I had dressed up as for Halloween the year prior automatically became the theme of my birthday party (which wasn't even until January). That's how much I wanted to extend the cost-per-wear of my Halloween look—doing girl math before I could even multiply. And why not get more looks from your spooky style? To that end, we've chosen six iconic duos and trios for fun costume options that are easy to put together and even easier to wear again. Browse our costume department, below.