Amanda Peet at the NBC All Star Party held at the Ritz Carlton Pasadena Huntington Hotel. Los Angeles, California 22.07.06

THE WHOLE NINE YARDS star is desperate to keep her baby news a secret as she films new TV show STUDIO 60 ON THE SUNSET STRIP.

A source tells American magazine Life + Style, "It's being kept a secret on the set, but she's three months along."