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Mariah Carey in Tom Ford dress at Billboard Music Awards

She reportedly had producers reeling when she skipped dress rehearsals just hours before her scheduled performance.

But Mariah Carey more than made up for her absence when she arrived to the Billboard Music Awards in a plunging Tom Ford dress that flashed plenty of cleavage.

The 45-year-old showed off her figure in a tight LBD that featured a long cape when she walked the red carpet just before performing at the event.

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