Rebbie Jackson, sister of the late singer Michael Jackson, leaves the courthouse on July 19, 2013 in Los Angeles, where their mother Katherine Jackson was finally due to take the stand at her trial against tour promoters AEG Live, who she alleges negligently hired the doctor convicted over Michael's 2009 death.     AFP PHOTO/Frederic J. BROWN        (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)