Watch out Jeff Bezos and Lauren Sánchez — Mark Zuckerberg and Priscilla Chan are trying out mob chic, too

• Jeff Bezos and Lauren Sánchez aren't the only couple that's stepping it up in the fashion arena.
• Mark Zuckerberg and Priscilla Chan were seen trying out the "mob chic" look at Saturday's UFC event. 
• Zuckerberg rocked a fit straight out of Eminem's rapper-swag playbook, while Chan went for an all-black number.

Step aside Jeff Bezos and Lauren Sánchez; there's a new it couple in town, and they're coming for the "mob chic" crown.