Mean Girls star Lindsay Lohan has walked away from her new movie, Bill. The reason? The film's first-time directors aren't well-known enough, reports IMDB.com.

The film, also starring Aaron Eckhart and Amanda Peet, is already in production. Lohan is said to be concentrating on her next film, Georgia Rule, starring Jane Fonda and Felicity Huffman.

A source told Fox News correspondent Roger Friedman, "She's just going to stick to working with big-name directors now."

Lohan will next be seen in A Prairie Home Companion, directed by Robert Altman and starring Meryl Streep, Lily Tomlin and Kevin Kline.