Time magazine coverboy and billionaire Facebook CEO Mark Zuckerberg has been named one of the 10 worst-dressed guys of 2010 by Esquire magazine.

When Esquire was putting together its “2010 Celebrity Style Hall of Shame” list, it didn’t have to look far in the tech world to find plenty of candidates. Mark was easy prey to Esquire‘s critical eye, given his high profile and simple wardrobe.

What’s the matter with the way he dresses, anyway? We don’t mind that casual look, and if a billionaire CEO has a closet full of exactly the same shirt and pants (we’re looking at you, Steve Jobs), who are we to say he can’t wear them? It makes him comfortable, and after all, getting away with wearing a T-shirt to a black-tie event means you’re one powerful dude.

All this attention to Mark’s wardrobe made us want to look for visual evidence. So here’s a gallery of the various outfits he’s been spotted wearing. You might be surprised at the subtle variation in his attire, contrary to the belief that he always wears the same thing:

North Face Sweatshirt

4/27/09: The zippered sweatshirt is a perennial fave. Image courtesy of Flickr/Silverisdead

Adidas Sandals

You’ll often see these sandals on Zuckerberg. Image courtesy Startup School

A Tie?

A gold tie goes with that North Face sweatshirt, doesn’t it?

Image courtesy of Flickr/Robert Scoble

The Uniform

11/15/10: This is Mark’s favorite getup. The T-shirt, the jeans.

Image courtesy of Flickr/Robert Scoble

T-Shirt

9/18/09: There’s that T-Shirt again. This shot was taken by Mashable’s own Jolie O’Dell.

Image courtesy of Flickr/Jolie O’Dell

Stay Fresh

9/1/2007: Mark seems happy in his Arm & Hammer Baking Soda T-Shirt

Image courtesy of Scott Beale/Laughing Squid

Hoodie

Even if he’s getting a bit warm, the hoodie’s zipped up. He’ll take it off if asked, though, and there’s a special Facebook “illuminati” design inside.

Image courtesy of Flickr/Jolie O’Dell

The Facebook Illuminati

This is the design stitched inside that sweatshirt.

According to SF Weekly, here’s what it means:

  • The bi-directional arrows indicate that each part generates inbound and outbound sharing;
  • The labels on the arrows — GRAPH, here represented by the “friend requests” icon, STREAM, represented by the “messages” icon and PLATFORM, represented by the “notifications” icon — represent the three prongs of Facebook’s strategy for 2010, as revealed at F8 conference;
  • The blue ring is the interface or Facebook’s wall around user data —
    the permeability of which remains a major point of controversy;

  • The motto on the upper half of the blue ring,”Making the world more open and connected” is, according to Zuckerberg, Facebook’s obviously unofficial “Mission Statement.”

Images courtesy of SF Weekly

Chillin’

Shoes optional. But check out the wardrobe variation: a brown sweatshirt.

Image courtesy of KoolBollywood

Shorts

Well, at least these boxers look comfortable.

Image courtesy of Fame/Zimbio

Even on 60 Minutes

There’s that T-Shirt again. Maybe Leslie Stahl wanted to see Mark in his native element.

Image courtesy of 60 Minutes/Fashion Blog

[Via Huffington Post]

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