Mariah Carey and Bryan Tanaka Enjoy Wine-Filled Date Night -- See the Pic!

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Mariah Carey and Bryan Tanaka love their wine -- especially if it's expensive!

The on-again couple dressed to the nines while enjoying a night out in a wine cellar filled with a collection of bottles worth over $24 million.

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"We're literally in a wine cellar that has over 250,000 bottles of wine, worth over 24 million dollars! ? It's one of the biggest collections of wine in the world!" Tanaka captioned an Instagram pic of the two. "The best part of this experience was spending it with this beautiful Queen. ? #BeautifulMemories #Moments4Life #MuchLove."

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ET caught up with Carey last month, where despite frequent outings with Tanaka, she said she was "single." The mother of two also dished about making it work with her ex-husband, Nick Cannon. 

"He's a good guy," the 47-year-old singer shared. "It's not that hard to make it work. Now we can laugh, and joke, and do the good parts of when we had a relationship."

See more in the video below.