See how different Elon Musk, Jeff Bezos, and other tech CEOs looked when they first started their companies

• Some of Silicon Valley’s biggest names are in their tech bro era.
• It wasn’t always like this — many Big Tech CEOs have shed more nerdy personas from their startup days.
• Here’s a look at tech’s most influential executives then and now.

Mark Zuckerberg isn’t the only tech CEO whose style has noticeably evolved over the years.

Other Big Tech leaders have significantly changed up their looks since starting their companies; some are nearly unrecognizable (we’re looking at you, Jeff Bezos.)

Here’s a look at the style transformations of some of tech’s biggest names: