Reese Witherspoon's singing skills in her new movie Walk the Line leave a lot to be desired, if her two-year-old son DEACON's reaction is anything to go by.

The LEGALLY BLONDE star appears alongside Joaquin Phoenix in the Johnny Cash biopic, playing the late JUNE CARTER CASH, and she was proud of her efforts in the film - until her son shared his blunt opinion.

She says, "They sent me a CD of (the soundtrack). Deacon put his fingers in his ears and said, 'I hate this song. Turn it off!' It was me singing!"