We hate to borrow Heidi Klum's line, but it's true: in fashion, one day you're in and the next…well, you know the rest. But even if a designer label does fall off, that doesn't mean it's gone forever. Just ask any of the people working at these next ten brands, which started out hot, but then started to wane after a few years. But each and every one was able to get back on track, and today are some of the biggest, most popular fashion houses around today. Some, you would even call iconic.