Mariah Carey would "rather be on stage with a pig" than duet with Jennifer Lopez.

The "Hero" singer slammed rumours she was planning to collaborate withpregnant J.Lo, saying it would "never happen".

When asked about a possible duet, she fumed to U.S. TV show "Inside Hollywood", "I'd rather be on stage with a pig! A duet with Jennifer Lopez and me just isn't going to happen."

This isn't the first time the diva singers have come to blows.

They first crossed swords in 2001 when Jennifer sampled two songs from the soundtrack to Mariah's movie "Glitter" in two versions of her own hit track"I'm Real" for her album "J.Lo".

An insider on the set of "Glitter" said at the time, "Mariah was so paranoidabout the music getting out that we had another singer sing the temporaryversions before the film was released."

"When Jennifer Lopez's album 'J.Lo' came out, and had the exact same song on it, we knew she had a right to be paranoid. We couldn't believe heraudacity."

Shortly after the scandal, Mariah was interviewed for German television and questioned about fellow divas.

When asked about former "Destiny's Child" singer Beyoncé Knowles, Mariah complimented her beauty and talent.

But when she was questioned about Jennifer, Mariah looked incrediblyuncomfortable and said, "I don't know her."

The feud was recently reignited when Mariah was told Jennifer has eighthours of sleep a night.

She cattily laughed, "If I had the luxury of not actually having to sing mysongs, I'd do that too."

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