Merely one day after the highly buzzed about IPO by Facebook, Mark Zuckerberg ditched his ubiqutous hoodie in favor of a suit and tie instead! OK! NEWS: BONO'S FACEBOOK STAKE COULD MAKE HIM A BILLIONAIRE The 28 year-old billionaire (experts estimate he's worth approximately $19 billion), wed longtime girlfriend Priscilla Chan on Saturday at their home in Palo Alto, Calif. And yes, he updated his relationship status on Facebook. Read More >>