Rumors of Gossip Girl casting a new French fling for Chuck Bass surfaced a few weeks ago, but now fans have a name and face to go with the already-infamous Eva.

Harry Potter actress Clemence Poesy will be casting a spell on Chuck this fall, Entertainment Weekly reports, having signed on to portray Eva for "multiple episodes."

The 27-year-old, who hails from suburban Paris in real life, will make her first appearance in the fourth season premiere, which will take place in the French capital.

Chuck's new girl is described as a warm-hearted bombshell who joins him in Paris, much to the surprise of Blair, who's been spending the summer there with Serena.

Clemence Poesy will play Eva on Gossip Girl.

Because Season 3 concluded in shocking, open-ended fashion, with Chuck shot on the streets of Prague, it's quite unclear where the producers are taking this Eva thing.

Chuck is a changed man, supposedly, but what does that even mean?

Needless to say, Eva will not be entering the Gossip Girl world with a huge fan base. How happy is Vanessa right now? People might hate someone more than her!

What do you make of the casting of Clemence Poesy - and how do think Blair will react to the fact that Chuck has a new French fling. Will that fling last? Discuss!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.