LOS ANGELES (Reuters) Veteran singer Stevie Wonder has filed for divorce from his second wife, fashion designer Kai Millard Morris. Wonder, 62, real name Stevland Morris, cited irreconcilable differences and listed the couple’s date of separation as Oct 2009. The papers obtained showed that the “Superstition” singer was asking for joint custody of the couple’s two boys, 10-year-old Kailand and seven-year-old Mandla.