Mariah Carey Performs at Beau James Packer's Melbourne Casino on New

James and some other guests were in attendance to cheer on Mariah!

Mariah Carey hits the stage at the Crown Casino's New Year's Eve Party for a special performance on Thursday (December 31) in Melbourne, Australia. Set to perform to a crowd of 1200 partygoers at the Palladium, Crown Melbourne, Mariah will be playing through to midnight and is bringing her full band.

Seven News has reported the pair landed at Tullamarine in Packer's private jet before making their way to the business mogul's hotel.

The pair then exchanged a quick kiss before holding hands and walking into the foyer.

A lucrative ring worn by Carey has since sparked engagement rumours, although the couple have not made any announcements.