Taylor Momsen of TV's "Gossip Girl" and Jacob Zachar of ABC Family's "Greek" are in talks to join Thora Birch in the cast of "
Cavegirl," a big-screen version of the 1980s BBC series.
The action comedy is billed as being a film about teenage problems in a stone age world. The filmmakers are in negotiations with Robin and Barry Gibb to write the music, Carnaby International head of sales Ian Hall said.