Inside Facebook CEO Mark Zuckerberg's Closet

Zuckerberg jokes about what to wear on first day back from paternity leave.

ByABC News
January 25, 2016, 2:45 PM

— -- Paternity leave is officially over for Silicon Valley's most famous dad.

Facebook CEO Mark Zuckerberg told his followers he's going back to work today and made quite the dad joke about his fashion choices, which are known to be incredibly predictable.

"First day back after paternity leave. What should I wear?" Zuckerberg wrote, sharing a photo of his trademark gray t-shirts and hoodies.

Zuckerberg went on paternity leave following the birth of his daughter Max, whose arrival was announced on Dec. 1. The doting dad has shared some fun snaps of his time bonding with Max, including reading to her, dressing her up as a Jedi, taking her swimming -- and even commemorating a trip to the doctor's office for vaccines.