Mariah, 49, donned a plunging black satin suit as she arrived back at the hotel, completing the elegant look with large hooped earrings and matching black stilettos.

The concert included a host of tracks from her critically-acclaimed latest album, Caution.

She also performed a host of her record-breaking hits, including Fantasy, Always Be My Baby, We Belong Together, Hero, and Without You.

Fans flocked to social media to praise the show, with one claiming they were left with “goosebumps the whole time” due to Mariah’s incredible vocals.

Bryan Tanaka escorted Mariah back to the hotel

Another put: “Mariah, you were amazing at the Royal Albert Hall. Your voice was incredible, couldn’t believe I was there.”

A third tweeted: “Thank you Mariah for an amazing night… Your performance was outstanding. Endless Love was so moving. Beautiful night!”

Mariah – who has sold over 200 million records worldwide – is expected to return to the UK in December for another run of her All I Want For Christmas is You tour.

8888Mariah couldn’t hide her joy after the concert that had fans tweeting with joyCredit: Splash News

Mariah was “honoured” this week to be awarded the Special International gong at the Ivor Novello Awards to celebrate her songwriting success.

The singer is credited as the co-writer on all 17 of her US chart-toppers and still holds the record for most number-one singles by a solo female artist.

Speaking in a pre-recorded video, Mariah told the audience: “Thank you, this is such an incredible honour.

8Mariah posed with her young children backstageCredit: Instagram8Mariah was supported by actress Priyanka Chopra on the first night of the London runCredit: Instagram

She added: “I can’t tell you how sad I am that I can’t be there with you guys… With my schedule changing all the time it has just been impossible and trust me this is a place I really wanted to be.

“I just wanted to bask in the moment as I rarely get acknowledged for my songwriting, which is the core of who I am, so I thank you for this incredible honour.

“Being in this industry and winning this as a female in music as well… I feel like just the acknowledgement is so much that it is hard for me to even express that, but I hope that you can understand this is sincere.”