Photos show Mark Zuckerberg's style evolution — from hoodies to silver chains

He dropped out of Harvard University to work on Facebook full-time in 2005, and his look at the time was that of a college student heading to class.

In the picture above, he paired his quarter-zip pullover with a pair of blue jeans — jeans which would become a recurring theme in Zuckerberg's life as a public figure.

The subdued outfit didn't really match the feisty attitude Zuckerberg had during the early days of Facebook. He infamously carried business cards that read, "I'm CEO, Bitch."

Eventually, Zuckerberg became known for his gray t-shirts and hoodies.

The jeans might have ranged from light to dark washes, but he almost always paired them with a hoodie and a comfortable pair of sneakers—he's wearing Brooks tennis shoes in the photo above.

"I really want to clear my life to make it so that I have to make as few decisions as possible about anything except how to best serve this community," Zuckerberg said in a 2014 Q&A. "I feel like I'm not doing my job if I spend any of my energy on things that are silly or frivolous about my life."

The photos above were taken four years apart, but it might not be easy to tell. For over a decade, Zuckerberg wore the same thing over and over.

Adam Mosseri, the head of Instagram, said during an appearance on "The Colin and Samir Show" that Zuckerberg spent many years "not wasting any energy on deciding what to wear."

Instead, he just wore "the same thing every day for a long time as a lot of tech execs have done," according to Mosseri.

"First day back after paternity leave. What should I wear?" he captioned a Facebook post that showed a rack full of the same gray shirts and dark gray hoodies in 2016.

Around 2018, Zuckerberg's style shifted, perhaps with his fashion meant to reflect his increasing wealth. According to Forbes, he was worth about $71 billion that year.

Instead of a basic shirt and hoodie, the Meta CEO started wearing expensive-looking cashmere sweaters and paired them with better-fitting jeans.

The pandemic blurred the lines of what exactly makes an outfit appropriate for work.

Returning to the office post-lockdown has spurred a new conversation about dress code, but when you're the boss, those rules are likely a bit looser.

Zuckerberg is pictured above with Facebook's then-chief operating officer, Sheryl Sandberg, and the former White House Office of National Drug Control Policy advisor Kevin Sabet in 2021.

The trio had just left a session at the Sun Valley Conference, but Zuck looked especially casual next to his peers. He ditched the blue jeans for shorts and completed the outfit with slip-on sandals.

Zuckerberg and Chan took a trip to Japan in February, and his vacation attire made major waves.

Months before his chain went viral, the shearling jacket he wore while in Japan caught the public's attention. When he was out and about, his Instagram followers saw more of his off-duty style.

Again, it included a neutral top, fitted jeans, and a pair of sneakers — this time white Nike shoes.

The new jacket, a departure from his old hoodies, made for an iconic "jersey swap" picture, with Zuckerberg trading tops with another iconic figure in tech, Nvidia CEO Jensen Huang.

Some events call for more formal dress, and Zuckerberg isn't too proud to push back on that.

For court appearances, luxurious weddings, and fancy ceremonies, he typically pulls out a classic black suit.

But for the March pre-wedding celebrations for members of India's richest family, the Ambanis, Zuckerberg and his wife Priscilla Chan wore all black, embellished with gold accents. He had a dragonfly on his lapel.

The outfit he wore to his 40th birthday party in May cemented Zuckerberg's new era in fashion. He wore a gold chain and a black T-shirt, but unlike his past shirt choices, it had a message.

The top reads "Carthago delenda est," which translates to "Carthage must be destroyed," a phrase famously attributed to Roman historian Cato the Elder. As Business Insider previously reported, it was a rallying cry within Facebook in 2016 when it was competing with Google.

He also previously explained that the new chains are a part of his "process" of designing a "long-term" chain engraved with a prayer he reads to his daughters.

His motive is endearing, and the internet's obsession with the necklaces makes for a lot of viral content and positive attention.

"I love it so much," Mosseri said in June.

Zuckerberg continued his exploration into designer shirts going during his and Chan's vacation in Ibiza, Spain, People reported. He was spotted wearing this white knit Balmain shirt with the brand's logo highlighted on the chest.

In spite of the hefty price tag, the Meta CEO surprisingly manages to keep this hypebeast shirt in line with his usual simple style. He accessorized with a pair of reflective glasses but kept the luxurious outfit casual with white sneakers and blue shorts.