On Gossip Girl, Nelly Yuki is perhaps the most complex character in the it-girl group. We’ve seen her buried behind her books, acting in a fat suit during the school play, using the girls against one another to climb the social ladder, and, in the finale, hitting on our dream boy Dan Humphrey after one too many drinks. Mochi meets Yin Chang, the actress behind Nelly Yuki, for the scoop on what goes on behind the scenes, from the casting office to the infamous fashion closet.

If there is one thing Nan Zhang – that’s Kati Farkas to “Gossip Girl” fans – would like the public to know, it would be this: She was never in a fight with Leighton Meester, and she did not leave the show because of a supposed rift with the Queen Bee.