These images come from a gallery at TooFab, and you can head over there to see some additional set photos.
That second photo recreates the scene in the original American Pie where the four central frustrated adolescents pledge to lose their virginity, with Thomas Ian Nicholas standing on a couch, delivering a Patton-like inspirational speech. Also returning to the franchise but not seen in these pictures are Seann William Scott, Shannon Elizabeth, Mena Suvari, Tara Reid, and Jennifer Coolidge. Newcomers include Katrina Bowden and Dania Ramirez. The presence of actor Tad Hilgenbrink, who played little sibling Matt Stiffler in the direct-to-DVD sequel American Pie Presents: Band Camp suggests that this big screen reprise will not simply disavow the four regrettable direct-to-DVD entries in the series.
Now that we know John Cho is in, the big question becomes whether or not Chris Owens will return as Chuck 'The Sherminator' Sherman.
American Reunion is scheduled to hit theaters on April 6, 2012.