'Project Runway' mentor joins cast of Columbia pic

Tim Gunn is ready to make it work on the bigscreen.

The straight-shooting “Project Runway” mentor has landed a live-action role in Columbia Pictures’ “The Smurfs Movie.”

Gunn, who is known for the catchphrase “Make it work,” will play an exec assistant at a major cosmetic company.

He joins a cast that includes Neil Patrick Harris, Hank Azaria and Sofia Vergara in live-action roles as well as Katy Perry, Fred Armisen, George Lopez, Anton Yelchin, Alan Cumming, Jeff Foxworthy, Wolfgang Puck and Jonathan Winters lending their voices.

Raja Gosnell is helming the pic, which is shooting in New York.

Gunn is Chief Creative Officer of Liz Claiborne and well-known as on-air mentor to designers on the Project Runway- now casting for Season 8

Gunn, whose smallscreen credits include “Ugly Betty” and “How I Met Your Mother,” will be seen on the bigscreen next in “Sex and the City 2.”

He is repped by CAA and attorney Eric Weissler.

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