Belle de Jour author Brooke Magnanti insists she was a call girl ! A9 M) b. H5 M) l! u" X! W " I- d. M. E8 T6 F- G. pBelle de Jour writer Dr Brooke Magnanti goes to court to defend her claims that she worked as prostitute, saying she will "present evidence that I was a sex worker" in unusual libel battle with her former boyfriend Owen Morris9 K: p" `4 A* [