Facebook founder and CEO Mark Zuckerburg has just updated his status to married!

Just one day after Facebook went public and became valued at $104 billion, and his longtime girlfriend Priscilla Chan graduated from medical school, the couple tied the knot at a small ceremony at his home in Palo Alto, California!

The met at Harvard and have been together for nine years, but made sure to keep their engagement a secret. Zuckerberg designed the ring for his 27-year-old wife, featuring "a very simple ruby," and fewer than 100 guests gathered to celebrate what they thought was a party for Pricilla's graduation.

The ceremony took place in Zuckerberg's backyard and "everybody was shocked," when they discovered the longtime pair were actually tying the knot, said a source.

Billie Joe Armstrong, the lead singer for Green Day, arrived to perform "My Last Night on Earth" for the newlyweds, and he also provided the musical entertainment for the ceremony.

Mark traded his signature sweatshirt and Adidas sandals for a simple suit for the ceremony, while his bride wore a traditional wedding dress. Food was served family-style, and included dishes from the couple's favorite Palo Alto sushi restaurant.