When you think of Mardi Gras, beads, bourbon, and parades may come to mind, but the holiday is a big deal in lots of places oceans away from New Orleans. The lead-up to Mardi Gras is known as carnival, so the worldwide celebrations from Rio de Janeiro, Brazil, to Venice, Italy, are actually all part of the same big global party. Whatever you call it, though, the week is the world's time for some of the most fabulous makeup, hair, and costumes you'll see all year. So grab a slice of king cake, get in the holiday spirit, and read on.