Bellbottoms may work for a stylish night out on the town. But try sporting these wide-legged pants at your college roommate's wedding, and you might as well shake, shake, shake your booty back to your place for a change of clothes. Disco isn't cool when people say "I do."
That's not to say that you can't invoke other styles and eras with your wedding guest garb. A 1960s pencil skirt will allow you to turn heads without causing a distraction, and a dress with an empire waist and cap sleeves will invoke the 1940s without making you look like a has-been. Just remember to adhere to the style of the wedding -- we've established that bellbottoms won't fit into even the most casual ceremonies, but a vintage sundress won't do at a black-tie affair, either.