Jason Segal and Emily Blunt comedy “Five Year Engagement” is firming up its supporting cast fast, with “Community” star Alison Brie signing on just yesterday to play Blunt’s younger sister. Today two more join the trio, as Variety reports “Parks and Recreation” star Chris Pratt and “The Amazing Spider-Man” villain Rhys Ifans have jumped on board in unspecified roles as well.

Production is expected to be underway by the end of March for the film that charts the highs and lows of a couple’s (Segal and Blunt) long-gestating engagement. Judd Apatow, Rodney Rothman and director Nicholas Stoller are producing the project. Stoller also co-wrote with Segel, having previously collaborated on “Forgetting Sarah Marshall” and “Get Him to the Greek.”

Pratt, who first captured our attention on the canceled-way-too-early “Everwood”, has been sticking to TV with a starring role on NBC’s “Parks and Recreation”, but has started to venture more into features, mostly co-starring with wife Anna Faris in her various romantic comedy capers. He recently wrapped “Ten Year” opposite Channing Tatum and will be seen opposite Faris once again in “What’s Your Number?”. Ifans is currently in the midst of playing The Lizard opposite Andrew Garfield as “The Amazing Spider-Man” and will next be seen in Roland Emmerich’s “Anonymous”, a Shakespearean-set political thriller.