Jennifer Hudson sang a special rendition of Whitney Houston's "I Will Always Love You" at the Grammys tonight. The tribute performance was added to the show after news of Whitney's passing yesterday. Jennifer sang the biggest hit of Whitney's career beautifully, despite choking back tears on stage and during rehearsals earlier today. The Grammys also honored the late star with a prayer at the beginning of the evening. Many members of the music industry and other celebrities have reacted to Whitney's death and some even spoke about the singer at Clive Davis's annual pre-Grammy party that took place last night.