Marc Anthony: button your shirt dude

Let's face it: when it comes to fashion, some men have a lot to learn. And, though it's become more acceptable (even encouraged!) for guys to take an interest in their appearance, most dudes still look like they dress in the dark -- even celebrities! Click through the gallery to our picks for the Worst Dressed Men in the World. (Pictured above: Marc Anthony performing in Milan. Wow does that look sleazy!)