While Kenneth Branagh's upcoming superhero tale already has a huge cast in place, it seems another new actress has been cast as well. MTV Splash Page recently spoke with Thor star Natalie Portman, who was promoting her new film Brothers, and she revealed that Kat Dennings (Nick and Norah's Infinite Playlist) has a role in Thor as well.

"Well I'm really excited," Portman told MTV News. "Kat Dennings is going to be in it with me and she's a good friend and an amazing actress, so I'm looking forward to that."
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Portman didn't reveal, however, what role Dennings had in the film. We'll be sure to keep you posted on any and all Thor news as soon as more information arrives.

UPDATE: (11/24/09 2:30 PM PST)Variety has confirmed Dennings' role in the film and is reporting that she will play Darcy, who works with Natalie Portman's character, Jane Foster.

Thor stars Chris Hemsworth, Tom Hiddleston, Natalie Portman, Jaimie Alexander, Colm Feore, Samuel L. Jackson, Kat Dennings and will be released on May 20, 2011.