A definitive ranking of the best and worst dressed executives in Silicon Valley

Jason Kempin/Getty Images for Rush Philanthropic Arts Foundation; Justin Sullivan/Getty Images; Jamie McCarthy/Getty Images; Kelly Sullivan/Getty Images for Sierra Club

From left: Bozoma Saint John, Satya Nadella, Arianna Huffington, and Jack Dorsey.

Silicon Valley is known for a lot of things, but high-fashion isn't one of them.

Its elite show up to meetings in pajamas, fleece vests have become the go-to uniform of venture capital investors, and many high-powered executives are so obsessed with efficiency, they've adopted a boring, unfashionable uniform they wear each day without fail.

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But don't let the Valley's nerdy reputation fool you - there are plenty of executives who dress to impress.

Instagram's Kevin Systrom has proclaimed that he's "probably the only guy in Silicon Valley who enjoys wearing a jacket or a tie," while Snap CEO Evan Spiegel (who is actually based in LA) has appeared in the pages of Italian Vogue. Uber's Bozoma Saint John doesn't shy away from bright colors or daring designs, and Microsoft's Satya Nadella is often spotted in $500 designer sneakers.

Business Insider pored through photos of the top executives in the world of tech to determine who has a great fashion sense and who needs some help. We eliminated anyone who simply doesn't care - Alphabet's Sergey Brin - or those who always look presentable if a bit bland, like HPE's Meg Whitman. Others, like Apple's Jony Ive, made the list because of their role within the company they work for - Ive is design chief at Apple, so his fashion choices must face some scrutiny.

The ranking was based, whenever possible, on three clothing categories - casual, business, and formal wear - and were further evaluated for attention to trends, fit, and color choices.

For each exec, we also found some of their exact clothes - or similar items - so you can replicate their look.

What follows is a non-scientific style ranking, from worst to best, of some of the top executives in Silicon Valley: