PICS: Zac and Yvonne at NBC Upfronts – UPDATED

Zac and Yvonne attended the NBC Experience (aka the upfronts) in New York today. Check out Zac’s lack of facial hair – looks like he’s already resumed Chuck’s clean-shaven look for the season 2 premiere, which begins filming May 23. Also, Yvonne looks fantastic in purple! More pics in the Gallery.

ETA: Yvonne and Zac also stopped by the Lucky Club where they played Guitar Hero III among other things. More pics in the Gallery.