Facebook co-founder and CEO Mark Zuckerberg wed longtime girlfriend Priscilla Chan Saturday, announcing the nuptials through a status update on the social networking site.

The 28-year-old billionaire's wedding took place a day after Facebook's historic initial public offering on the Nasdaq stock exchange on Friday.

More than 200,000 people liked Zuckerberg's status change, which was accompanied by a photo of the smiling couple in wedding attire in a small, verdant outdoor setting with a string of lights behind them.

In the photo, the famously casual Zuckerberg is wearing a dark blue suit and tie, while Chan has on a sleeveless white dress with lace overlay. Both are smiling for the camera.

Zuckerberg, whose shares are worth nearly $20 billion and who retains voting control of Facebook, marked the debut of his company's stock at Facebook's Silicon Valley campus on Friday, symbolically ringing the opening bell for stock trading.

The IPO did not go as well as the social networking company had hoped, with shares closing just above the offering price of $38 a share after trading glitches and a last-minute, 25 percent increase in the number of shares being sold.

More than 576 million shares changed hands, setting a trading volume record for U.S. market debuts. Facebook posted $3.7 billion in revenue in 2011 and $1 billion in profit. The site boasts 900 million global users.

Zuckerberg co-founded Facebook in a Harvard University dormitory eight years ago. Chan just graduated from medical school at the University of California, San Francisco. The couple met while at Harvard.

Neither commented further on the news on their Facebook profile pages.

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