VIDEOS: Kelvin Costner's Speech at Whitney Houston's Funeral, the Best Speech of them All

TMZ Kevin Costner fought hard for Whitney Houston to land the role of his leading lady in their 1992 blockbuster, "The Bodyguard," and the actor traveled to New Jersey to pay tribute to his former co-star at her funeral on Saturday.

After recounting stories of their fun on the set, the 57-year-old actor told how Whitney, despite her supernova success, still doubted whether she was "good enough," "pretty enough" -- fears he attempted to quell.

Watch video after the cut and another of Clive Davis.. RIP Whitney Houston

Whitney Houston's "Bodyguard" co-star Kevin Costner (see above) and mentor Clive Davis (see below) were among those who gave touching speeches during her funeral service this afternoon. Alicia Keys, R. Kelly and Stevie Wonder were among the performers who sung in Whitney's honor.

RIP Whitney.