Troubled singer Britney Spears caused a traffic jam after she stopped by the roadside to changer her son's diaper. The Toxic star made an impromptu stop at a Malibu, California roadside on Sunday (13May07) to change her eight-month-old son Jayden James' nappy - and paparazzi descended on the car causing road chaos. It's not the first time Spears' parenting skills have been questioned - she almost dropped her eldest son Sean Preston on one occasion and was seen driving her car while he sat on her lap last year (06).