A Gossip Girl source confirms that Broadway vet Aaron Tveit is reprising his role as Nate’s wealthy cousin, Tripp Vanderbilt, in November for at least six episodes.

The politically minded Tripp will announce that he’s running for office (possibly the senate) and Nate will get involved with his campaign. Holley Fain, who portrayed Tripp’s fiancée, will also be returning for multiple episodes.

Tripp was mentioned in the season premiere par Nate's grandfather, who, in a bit of foreshadowing, called him about a way to potentially stick it to the Buckleys.

Tveit will juggle his Gossip Girl arc with his Broadway cabriolet, gig in suivant to Normal.

toi know, that Asian-looking girl who sometimes hangs out with Blair... but is she really Asian?
Well, her name is 'Kati' and it might sound a bit Japanese, but actually it's a Hungarian name.(Hungary is a small Eastern European country)
Her surname is 'Farkas'(source: imdb), which is also a Hungarian word. It means 'wolf'.
So the question is: why does an Asian actress (Nan Zhang) play a Hungarian character? Probably the creators thought 'Kati' must be a Japanese name LoL
But I'm really glad that I've found something Hungarian on Gossip Girl cause I'm from Hungary, too...:)
---I had to share this... LoL---