Heather Mills has been dumped by the lawyers representing her in her high-profile divorce to Sir Paul McCartney. The former model, 39, was told by lawyers at Mishcon de Reya they could no longer represent her in her battle with the former Beatle following a string of print and television interviews mentioning the divorce. A spokesman for law firm says, "We are not representing her any more." According to reports, the firm acted because Mills defied a gag on talking about the couple's daughter Beatrice, four. A source tells British newspaper The Sun, "She was warned against going on TV and talking about Paul, their marriage and anything about her daughter. But she just refused to listen."