Wang makes an appearance in tonight's wedding episode and cracks that it's "the beginning and end of my television career!" She admits to repeatedly flubbing her lines and says with a laugh, "I don't know, maybe I was just so in awe of looking at Leighton in the dress. She kind of just blew my mind away when she first walked onto the set!"

As revealed in our first look at Blair walking down the aisle, she does make quite the mind-blowing impression. (Do not watch while operating heavy machinery!) And for you who are wondering whether she actually says "I do" to Prince Louis, I can't give anything way, but let's just say I personally was surprised!

Blair and Serena's (Blake Lively) dresses—which were designed by Vera (a self-professed, longtime Gossip Girl fan) and chosen by G.G.'s stylist extraordinaire, Eric Damon—were specifically chosen to suit their personalities.

"Blair Waldorf is an American princess," Damon explains. "So for me, [her wedding dress] had to be very tailored and very modern, but also have a very classic kind of Old World sense to it." He reveals they struggled deciding between two dresses, and in the end, spoiler alert: They were able to use both on the show.

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