Helena Bonham-CARTER has actress Helen McCrory to thank for her chance to join the Harry Potter cast after she fell pregnant and have to give up the chance of playing BELLATRIX LESTRANGE in new film HARRY POTTER + THE ORDER OF THE PHOENIX. MCCrory was initially cast as Lestrange in the movie, and Bonham-Carter can't thank The Queen star's husband, Damian Lewis, enough - for impregnating her. She says, "I've got to thank him."