It's over! Mariah Carey allegedly dumped by her billionaire fiance

It's all over for Mariah Carey and her billionaire fiancé, James Packer.

Australian tabloid Woman's Day reports that the 49-year-old Australian businessman dumped Carey following a massive blowup over "Mariah's World," her upcoming E! docu-series.

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"James had huge reservations about Mariah's new reality TV show and the fact that she was willing to expose their lives to the world," a source told the tabloid.

But her reality show wasn't the only point of contention between the two lovebirds: Packer was also allegedly fed up with the singer's extravagant spending. Despite that, reports indicate that he's letting her keep the 35-carat engagement ring that he gave her when he proposed in January.

See photos of the couple together:

Mariah's World wasn't just the name of her reality show, it could have also been a descriptor for her general disposition. When Packer's sister turned 50 earlier this year in Sydney, Australia, Carey refused to attend.

Not only that, but she also didn't get along well with his mother, Ros Parker.

Both of them had been married twice before: Carey to Nick Cannon and Tommy Mottola, and Packer to Jodie Meares and Erica Packer.

See photos of Mariah Carey through the years:

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