Marc Jacobs' reputation is that of a rule-breaker. When one of his 2007 runway shows started two hours late, he found himself at the center of a public war of words with some very influential fashion critics. And some of his most memorable designs—a grunge collection he created as head of Perry Ellis in 1992—resulted in his firing from the label. Jacobs now designs for three major labels; two are his own, Marc Jacobs and Marc by Marc Jacobs, and he's also creative director for the French luxury house Louis Vuitton. Rule-breaking aside, critics have hailed Jacobs as one of the most influential fashion designers of his generation.