Occupation: CEO, Mashable
Signature style: Slim Suits, Open Shirts
Notable work: Spearheaded the redesign of Mashable to work with responsive web design.

Despite dominating Twitter and a good chunk of the entire Internet, Pete Cashmore also dresses pretty damn well too. Which is totally unlike most bloggers, even the ones that actually write about style. He nails it in a suit, not too slim or too baggy, and has no problem throwing on a pair of dark jeans with a blazer for a no-nonsense business casual uniform.