James Packer takes very glamorous ex-wife Jodhi Meares to star-studded Lexus Ball while girlfriend Mariah Carey makes directorial debut for Christmas movie

They've remained very close since their amicable divorce 13 years ago.

And Jodhi Meares and James Packer were photographed with each other again showing their friendship remains stronger than ever as the casino magnate escorted her to the Lexus Ball.

While his girlfriend Mariah Carey continued directing festive movie Christmas Melody stateside, the billionaire, 48, enjoyed a night at the star-studded event with his ex in Perth on Saturday.

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Reunited: James Packer escorts very glamorous ex-wife Jodhi Meares to the star-studded Lexus Ball in Perth on Saturday while his girlfriend Mariah Carey makes her directorial debut for a festive new movie

Reunited: James Packer escorts very glamorous ex-wife Jodhi Meares to the star-studded Lexus Ball in Perth on Saturday while his girlfriend Mariah Carey makes her directorial debut for a festive new movie

Jodhi, who recently started dating New York City-based photographer and actor Nick Finn, cut a svelte figure in an elegant, knee-length dress.

The cream-coloured frock featured a plunging neckline and demure side-split.

The 44-year-old activewear designer's long brown locks were coiffed in a flattering side-parting and curled into softs curls.

Remaining stateside: While James and Jodhi rubbed shoulders with Australia's elite, the billionaire's girlfriend, Mariah Carey (here together in their first red carpet appearance last month in New York City) is hard at work

Remaining stateside: While James and Jodhi rubbed shoulders with Australia's elite, the billionaire's girlfriend, Mariah Carey (here together in their first red carpet appearance last month in New York City) is hard at work

Ever the gentleman: James escorted his ex-wife at the Perth function

Ever the gentleman: James escorted his ex-wife at the Perth function

New love: Jodhi is dating 28-year-old photographer and actor Nick Finn and the pair spent ample time together in recent weeks in New York City

New love: Jodhi is dating 28-year-old photographer and actor Nick Finn and the pair spent ample time together in recent weeks in New York City

Her formerly estranged husband held her upper back chivalrously as he ushered her through the function venue.

As the pair rubbed shoulders with Australia's elite on the night, the businessman's partner, Mariah, is hard at work across the world.

The singing diva, who made her romance with James public this summer when the pair holidayed together on a yacht in the Mediterranean Sea, is hard at work directing made-for-TV movie A Christmas Melody.

Close pals: The 44-year-old activewear designer shared a photo of her joining her ex-husband and his new girlfriend on their luxury yacht holiday this summer

Close pals: The 44-year-old activewear designer shared a photo of her joining her ex-husband and his new girlfriend on their luxury yacht holiday this summer

Young love: Jodhi and James were married for three years, but divorced in 2002

Young love: Jodhi and James were married for three years, but divorced in 2002

Mature couple: Since their divorce, the former couple (here in 1999, the year they wed) have rarely been pictured together, but insist they are still good friends

Mature couple: Since their divorce, the former couple (here in 1999, the year they wed) have rarely been pictured together, but insist they are still good friends

The film, which stars Mean Girls actress Lacey Chabert, will see Mariah take on the commanding role for her first time.

While on the European yacht in June, James and Mariah were joined by Jodhi, who posed with her husband for the first time since 2002.

'Amore,' Jodhi captioned the shot.

In August, the former couple were also by each other's side as they attended a fundraising dinner together in Sydney.  

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