Their collective style as a couple has also changed quite a bit in the two decades they've been together — especially as Zuckerberg's net worth has grown to $232 billion, according to Forbes.
Here's what their fashion transformation has looked like.
Priscilla Chan and Mark Zuckerberg have always dressed in understated, business-ready looks.
Priscilla Chan and Mark Zuckerberg attended the Breakthrough Prize ceremony in 2014.
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For example, they kept their outfits simple on the red carpet for the 2014 Breakthrough Prize ceremony.
Zuckerberg wore a black tuxedo and satin tie, while Chan sported a sparkling, sleeveless dress in a deep shade of blue.
That was especially true when they visited the White House in 2015.
Priscilla Chan and Mark Zuckerberg at a White House state dinner in 2015.
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For a state dinner that year, Zuckerberg sported his usual black suit, tie, and dress shoes.
Chan, on the other hand, looked elegant in a vibrant red dress with a lace overlay. She paired the garment with a black clutch, simple sandals, and an updo hairstyle.
By 2016, the couple developed a uniform of sorts.
Priscilla Chan and Mark Zuckerberg at the 2016 Axel Springer Awards.
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Zuckerberg continued attending events like the 2016 Axel Springer Awards in dark suits and white undershirts. Rather than accessorizing, he added only belts and dress shoes.
Chan, on the other hand, began sporting all-black ensembles that year. For the awards ceremony, she donned black leggings underneath a knit tunic and ankle-length boots.
But they elevated their looks around 2018.
Mark Zuckerberg and Priscilla Chan attended the Breakthrough Prize ceremony in 2018.
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For the annual Breakthrough Prize ceremony, Zuckerberg wore a black tuxedo with sharp, satin lapels and his signature tie.
Chan dazzled alongside him, wearing a black sleeveless dress beneath a glitter-covered fishnet overlay with a high neckline and long sleeves.
Chan and Zuckerberg showed the power of suits in 2019.
Priscilla Chan and Mark Zuckerberg attended the Breakthrough Prize ceremony in 2019.
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They both walked the Breakthrough Prize red carpet in black suit jackets, with Chan wearing hers over a solid black gown.
Zuckerberg swapped his usual necktie for a bow tie.
In 2024, the couple started dressing to impress.
Priscilla Chan and Mark Zuckerberg attended the 2024 UFC 300 event.
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The couple attended the 2024 UFC 300 event in April while wearing casual yet cool outfits. Zuckerberg wore a white T-shirt with black jeans, and Chan donned a black blazer as a dress with sunglasses and a gold necklace for accessories.
Zuckerberg's fashion changes might have been strategic. Meta announced last summer that it was working to win over Gen Z.
The Facebook founder could have been doing the same by upping his style reputation.
They boosted their White House fashion at Donald Trump's 2025 inauguration.
Priscilla Chan, Mark Zuckerberg, Lauren Sánchez, and Jeff Bezos at Donald Trump's 2025 inauguration.
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Zuckerberg, who matched fellow billionaire Jeff Bezos at the event, wore a navy suit, white button-down shirt, and deep red tie.
Chan, however, made a high-fashion statement with a baby-blue Bottega Veneta set. She wore a $2,500 wool cardigan, a matching $2,800 skirt, and chunky pearl necklaces.