Published on: April 16, 2012
Photography by: Getty Images Entertainment

WHITNEY HOUSTON’s still-grieving mother is furious after learning that RIHANNA might portray her tragic daughter in a feature film, sources tell The ENQUIRER.

The 24-year-old R&B singer has referred to Whitney, who accidentally drowned in a bathtub at the Beverly Hilton hotel on Feb. 11, as one of her idols. She recently told an interviewer she would love to play Whitney on the big screen.

But Whitney’s mother, gospel singer Cissy Houston, 78, fumed when she heard Rihanna was gunning for the role. “Over my dead body!” declared the pop star granny, according to a source.

“Cissy believes Rihanna cel­ebrates everything she hated about Whitney’s life – the drugging, the boozing, the abusive relationship,” the source continued.

As The ENQUIRER reported in January, Rihanna’s pals were urging her to check into rehab after last year’s hard-partying “Loud” tour was plagued with health issues and a trip to the hospital for what her reps said was “the flu.”

“Cissy does not think Whitney should be represented by some­one like Rihanna,” said the source.

 “In spite of what anyone thought about Whitney, she sees her as a God-fearing Christian who loved the Lord.”

THAT – and drugs galore!

Which is why Whitney’s daughter Bobbi Kristina feels ONLY she should play her drug-addled songstress mom.