Brooke Shields Breaks Her Hand During Rehearsals

Actors are told to "break a leg" for good luck. But a hand, too?

Brooke Shields has been sporting a cast lately, and her rep tells PEOPLE it's the result of a mishap while preparing for a Los Angeles stage show.

"Brooke broke her hand during rehearsal for the musical Leap of Faith, her rep says. "The cast will be off before previews on Sept. 11. It was a minor break and did not affect the production schedule."

Shields, 45, is starring with Raúl Esparaza in the show at the Ahmanson Theatre. Opening night is Oct. 3.