WHITNEY HOUSTON “warts and all” biopic ignites family World War III!

BOBBI KRISTINA’s surprise wedding isn’t the only thing tearing Whitney Houston’s troubled family apart – they’re also bickering over a new movie about the tragic songbird’s life.

The late diva’s daughter Bobbi Kristina, 20, supports a warts-and-all biopic being developed by Whitney’s mentor, music mogul Clive Davis, sources say. But Whitney’s mother Cissy Houston and her cousin Dionne Warwick strongly oppose the project unless they’re given full creative control, the sources add.

“Clive is not giving in to their demands,” said an insider. “He’s told Whitney’s family that this movie is a labor of love for him, and he’s calling all the shots.”

Davis wants multitalented Tyler Perry, the writer/producer and star of the “Madea” movies, to direct the film, with “Anchorman 2” actress Meagan Good playing Whitney, according to the source.

But Warwick apparently has other ideas, insisting that Davis consider Whitney’s “Sparkle” co-star Jordin Sparks as well as pop star Rihanna.

“But Clive has blown Cissy and Dionne off,” the insider added. “He feels that Meagan will bring dignity and gravitas to the role.”

Meanwhile, Bobbi Kristina has grown close to Perry and is said to be siding with Davis.

“Krissi is definitely on Team Tyler, which is causing terrible tension within her family,” disclosed the insider. “She’s also hoping Clive and Tyler will give her some type of supporting role. It’s just terrible that this tug of war is going on over Whitney’s legacy. It would have broken her heart to see her loved ones fighting so viciously.”