What Is She Wearing? Show: Gossip Girl?

Seen on TV. Leighton Meester of Gossip Girl wears a gorgeous black and white coat (see link).

http://www.tv.com/photos/viewer.html?type=21&ref_id=68744&ref_type_id=101&pic_number=162270&tag=photo_grid;img;1

Could anyone please enlighten me about the make of the coat (i.e. brand, collection) or if there is anything similar to it?

I've searched all the typical GG blogs and could not find a post about the coat.

how long was this aired. i dont remember it but you could check cw and go to gosip girl and ciheck!

i love it i have no clue as to where to get one though sorry