Mariah Carey Reveals How She Met Billionaire Boyfriend James Packer and Shows Off Stunning New Jewels

The 45-year-old also talks co-parenting with her ex, Nick Cannon.

Mariah Carey
is spilling new details about her relationship with Australian billionaire James Packer.

"We first met in Aspen," she reveals on Steve Harvey, sitting down for an interview to air during the full hour of the show's Wednesday, Nov. 25 broadcast. "We were at the Hercules premiere. We were talking and laughing and people were getting mad at us and stuff like that. So we hit it off."

Host Steve Harvey muses that Packer is "a lucky guy," while Carey sweetly responds: "I'm lucky too."

WATCH: Mariah Carey Dishes on Her New Boyfriend and Being an 'Icon' 

Indeed! Carey wears a stunning necklace by Van Cleef & Arpels -- a gift from her beau -- during the interview.

"Oh, this old thing?" she teases. "[It was] a very, very big surprise, very nice."

Carey and Packer made their red carpet debut together at The Intern premiere in September. "James was leading Mariah through the theatre room and had his hand on her back. Mariah looked very proud to be there with James," an eyewitness told ET at the time. "He seemed a little more under the radar than she is but looked at her very adoringly and happy."

The following month, Carey opened up to ET about the outing.

"I don't think either one of us thought, 'Here we are, making a debut,' he's not that guy," Carey said on the set of her Hallmark Channel holiday movie, A Christmas Melody. "It was a lot for him. ... I just automatically pose. I can't help it!"

READ: Inside Mariah Carey's Walk of Fame Luncheon 

Carey split from husband Nick Cannon late last year, but the two have remained close in co-parenting their 4-year-old twins, Moroccan and Monroe. Just last month, Carey threw a lavish Halloween soiree in Beverly Hills and celebrated with her ex and her kids.

"I thought it was important that they see their parents together occasionally," she tells Harvey.

READ: 9 Reasons Mariah Carey's 'All I Want For Christmas Is You' Is the Best Holiday Song of All Time

But the real reason for Carey's sit-down was to promote her new children's book, inspired by her hit holiday song, "All I Want For Christmas Is You."

"I just remember writing the song in this little room with a little Casio keyboard and, just by myself, thinkin' about, 'What are all the things I can think of that remind me of Christmas and the holidays?'" she recalls. "Of course I wanted it to work and to be a hit Christmas song, but I never knew how big it would be."

Flashback time! ET was with the singer in 1994 to discuss the brand new holiday album, Merry Christmas.

"When you record a Christmas album, it's around for the rest of your life. It's something that people can play for years and years to come," a 24-year-old Carey told ET at the time. "You always hope people will like them, they'll become classics. You know, that's a dream."

See the interview below!