For a movie about a bunch of little blue people, the cast of "The Smurfs Movie" is sure getting very big. The latest to join the cast is noted fashion expert and "Project Runway" mentor Tim Gunn.

Variety reports that Gunn will play the role of an executive assistant at a major cosmetics company. Presumably, director Raja Gosnell will work out some way for Gunn to utter his "Runway" catchphrase, "Make it work," to Tailor Smurf.

The fashion guru joins a cast that already includes Neil Patrick Harris, "Glee" star Jayma Mays, Hank Azaria and Sofia Vergara, as well as the voice-acting talents of Katy Perry, Fred Armisen, George Lopez, Anton Yelchin, Paul Reubens, Alan Cumming, Jeff Foxworthy, Wolfgang Puck and Jonathan Winters.

"Smurfs" shooting is under way right now in New York City. Just this week, MTV ran an image of Azaria decked out as Gargamel, the evil wizard who was driven on the cartoon by his mad desire to cook and eat the Smurfs.

The movie will follow the diminutive blue people as they flee from their village after Gargamel locates it. They slip away through a magical portal and land smack in the middle of New York City's Central Park. With Gargamel close behind, the Smurfs must find a way home before the wizard catches up with them.

Gunn has appeared in guest roles on "Ugly Betty" and "How I Met Your Mother," which also happens to star Harris. Gunn also hosts his own reality TV series on Bravo, "Tim Gunn's Guide to Style." "The Smurfs Movie" isn't out until August 2011, but Gunn will be featured on the big screen long before then: He'll be seen in the upcoming "Sex and the City 2," which is out at the end of this month.

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