Actor Kevin Costner was a close friend of Whitney Houston's since before the two shared the spotlight in the popular film The Bodyguard. So much so, he delivered an impassioned eulogy at the late-singer's funeral. And now, watching Houston's daughter Bobbi Kristina Brown hospitalized in a coma after being found unconscious in a bathtub -- just as her mother was nearly three years earlier -- Costner says he's hoping for a miracle.
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