According to Dark Horizons, Michelle Pfeiffer and Kevin Kline are the latest stars to sign on to maverick director Robert Altman's movie version of A Prairie Home Companion. Altman apparently mentioned those names during a recent interview with Chicago public radio station WBEZ.

"I'm literally doing a film of one of [Garrison Keillor's] radio broadcasts, only I'm filling it with a lot of movie stars. He'll be in it prominently, because he's a genius," said Altman.

Altman previously announced that Meryl Streep and Lily Tomlin would play the Johnson Sisters, the two remaining members of a failed singing act. Other cast members he named include Lyle Lovett, Tom Waits, Maya Rudolph and Garrison Keillor himself. Lovett, Waits and Tomlin have appeared in other Altman films such as The Player, Nashville and Short Cuts among others.

Keillor also wrote the screenplay for the film. Shooting will take place at the Fitzgerald Theatre in St. Paul sometime this winter.