The 44-year-old superstar announced her big news on The Ellen DeGeneres Show last night (14 January).
"I'm going to do my first ever residency in Vegas at Caesars," began mum-of-two Mariah. "This is a special event for me.
"And again, I have to hope that the fans will enjoy this because I'm gonna be performing, which was kind of inspired by my album #1's, and this is now the updated version with 18 of them."
With 14 studio albums and five Grammys to her name, fans can expect the hitmaker to perform many pop classics including 'Vision of Love', 'We Belong Together' and 'Touch My Body'.
"Hopefully other people will enjoy this," Mariah continued. "I've never done this before."
Details about the length or start date of Mariah's residency is yet to be revealed. Watch Mariah announce her news here.
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Watch Mariah's video for '#Beautiful' below: