Hugh Hefner's Ex-Wife Kimberly Defends Hef, Slams Crystal and Former Girlfriends

Hugh Hefner's ex-wife Kimberly is defending the Playboy founder against an onslaught from his widow Crystal ... 'cause Kim suggests Crystal's just bashing Hef to make a buck. Kimberly -- who was married to Hef from 1989 to 2010 and had two kids…