Jennifer Hudson brought the house down at Clive's Davis's pre-Grammy party Saturday night, with a rendition of "Greatest Love of All" that would have surely left Whitney Houston impressed. Kevin Costner Whitney's "The Bodyguard" co-star, hopped on stage with a super emotional tribute to both Whitney and Clive. Speaking to Davis from the stage, Costner said, "Neither one of us, in the end, could protect your beloved Whitney. Costner went on "But your fingerprints on her life are clean my friend. You were a miracle in her life. Thank you for being her bodyguard, Clive. Everyone in this business has a mom, but not everyone has a Clive.

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