Mark Zuckerberg and Priscilla Chan's Wedding on May 19, 2012. Credit: Allyson Magda Photography

Priscilla Chan's wedding gown is a major "like!"

Chan, who tied the knot Saturday with her longtime love, Facebook founder/CEO Mark Zuckerberg, chose an elaborate design for the private, low-key ceremony.

The $4,700 creation by Claire Pettibone, who also offers lingerie and sleepwear, is a laser cut floral gown adorned with matte sequins lined in silk, with an illusion jewel neckline and sheer back with chapel length train.

While Chan, 27, saw to the details of her statement gown, Zuckerberg, 28, designed her wedding bauble himself: a simple ruby ring. The pair, who have been together nine years after meeting at Harvard University, are already parents to Beast, the dog they adopted last year.

The couple's wedding wasn't the only milestone they reached this month. Chan, 27, graduated from medical school at the University of California and Zuckerberg, 28, took Facebook to the stock market with a starting negotiated price of $38 a share.

At the surprise ceremony (the gathering had been planned to celebrate Chan's graduation), guests ate family-style from the couple's favorite local eateries, Palo Alto Sol and Fuki Sushi. For dessert, attendees ate burdick chocolate "mice," which the couple had on their first date.