Singer Mariah Carey went through an embarrassing nip slip right after a romantic dinner with her billionaire husband-to-be. The singer’s weight gain might be the reason for the mishap.

She had dinner with her billionaire fiance, James Packer, in Hollywood on Monday.

Mariah Carey showed her love for Packer before stepping into a friend’s car. She got involved in a passionate PDA with Packer on the sidewalk, during which she showed off her elegant figure in a body-hugging dress.

While the 46-year-old singer seemed a little “worse for wear”, she left Craig’s restaurant and got into a friend’s car. This is where the embarrassing wardrobe malfunction took place.

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A photo posted by Mariah Carey (@mariahcarey) on

She got in the car with a big smile on her face, her eyes hidden behind designer sunglasses. However, her skintight black dress slipped when she sat inside the car.

The dress she was wearing was a tight, black mid-length dress that had a lace-up front. The dress showed off her plentiful cleavage.

As she folded her arms in the back seat of the car, she was not aware that her dress had already slipped. The slip revealed her black lace bra and part of her nipple.

Mariah Carey’s sexy dress was accessorized with “open-toed lace-up stiletto boots that featured gold heels,” reports The Sun.

She didn’t forget to flaunt her diva style with a wrist full of diamond-embedded bangles. She was also wearing her huge 35-carat diamond engagement ring that was worth $10 million.

The singer was wearing fresh makeup, and despite her action-packed night, the makeup stayed spotless.

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She made her cheekbones more noticeable with a dusting of blush, and she looked enigmatic with delicate pink lip gloss, says the Daily Mail.

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It was reported earlier that the “We Belong Together” singer got extremely depressed right after she broke up with Nick Cannon. Afterward, she again started to gain weight as she was going through a tough time.