Mark Zuckerberg, Billionaire Facebook Co-Founder, Ties the Knot

Life is good for Mark Zuckerberg, the main face and primary co-founder of Facebook, the largest social networking site on the planet. Zuckerberg celebrated his 28th birthday on Monday, became a billionaire when Facebook became a publicly traded company on Friday, and then a day later tied the knot with Priscilla Chan, his sweetheart of almost 10 years.

According to an Associated Press report, Zuckerberg and Chan were wed at his home in Palo Alto, California, in front of less than 100 guests who had no idea they were attending a wedding. Instead, they had gathered at Zuckerberg's home to celebrate Chan's graduation from the University of California, San Francisco School of Medicine. She studied pediatrics.

Zuckerberg, recently known for wearing a hoodie, donned a suit (dark blue) and tie, and Chan wore a white wedding dress. The two had met at Harvard and have been together for more than nine years, AP reports.