Mariah Carey is determined to shut up all you people who laughed at her in “Glitter.”

The Grammy winner put away her lip gloss to play the battered wife of a state trooper in “Tennessee,” which won raves at the Tribeca Film Festival. Director Lee Daniels was so impressed with her grit that he’s cast her in “Push,” in which she plays a Harlem social worker ministering to an obese, HIV-positive woman impregnated twice by her father.

But Mariah isn’t getting mired in misery. As she gets ready to tour again, she’s also developing a movie musical based on her colossal-selling Christmas album.

It’s about a town outside a city - perhaps not unlike Mariah’s hometown of Huntington, L.I. - where a ruthless developer wants to turn it into one big mall.

“Mariah doesn’t want to let that happen,” says her producing partner Benny Medina. “Her character uses song and love to keep the Christmas spirit alive.”

Mariah says the script, which “High School Musical” writer Peter Barsocchini is working on, is still in the early stages. But she tells us, “Since I recorded the Christmas album, I’ve always wanted to make a movie to go with it, something that people could watch and hear and enjoy every year. I’m into it. I’m all about the holiday season.”

Source: Celebrity Mound