Madchen Amick by Tony Barson/WireImage.com Madchen Amick by Tony Barson/WireImage.com

Get those claws out Gossip Girl Upper East Siders, because there's a new cougar in town! OK, she's not quite a full-fledged cougar age wise, but Madchen Amick has just been cast as a May-December love interest for Nate - aka Blair's high school-aged ex.

EW reports that Amick, who played a casino wife on the "blink-and-you-missed-it" Viva Laughlin, will play Catherine Mason when Gossip Girl returns to the CW on Sept. 1.

What do you think of a cougar crashing the Gossip gang? - Erin Fox

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