The actor will play the role of Rikard, a European architect who finds himself in contact with Samantha (Sarah Jessica Parker).
Writer/director Michael Patrick King (Sex and the City: The Movie) is also coming back, as are Parker, Kim Catrall, Kristin Davis and Cynthia Nixon.
The film has started shooting in New York.
Sex and the City 2 was released May 27th, 2010 and stars Sarah Jessica Parker, Kim Cattrall, Kristin Davis, Cynthia Nixon, Chris Noth, David Eigenberg, Evan Handler, Jason Lewis. The film is directed by Michael Patrick King.