Mariah Carey and James Packer make their red carpet debut

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Mariah Carey and James Packer made their first red carpet appearance together on Monday evening. The pair, who have been dating since the summer, stepped out for The Intern premiere at Ziegfeld Theater in New York.

The 45-year-old singer donned a maroon coloured maxi dress and leather jacket for her red carpet appearance, and appeared thrilled to be in the company of her boyfriend, who looked smart in a black suit and patterned tie.

It was the first high profile appearance for the couple, who were first linked when they were spotted enjoying a Mediterranean cruise together in June, and suggests things may be getting more serious between them.

MariahCarey-JamesPacker-VIEW GALLERY

Mariah Carey and James Packer made their first red carpet appearance together

Mariah recently opened up about their "fun" romance at the Harper's Bazaar ICONS issue party, telling Entertainment Tonight: "It's fun, I'm not gonna lie. He's not joining me inside tonight, but we were together last night, so that was fun."

James and Mariah's romance certainly seems to be heating up. In July, just a few weeks after their relationship went public, Mariah dedicated her performance of Hero to her boyfriend while on stage at Caesars Palace Colosseum in Las Vegas.

"I have a new heart tonight," the singer said, to cheers and applause from the audience. "James is in my heart tonight."

Mariah-James-VIEW GALLERY

Mariah and James have been dating since the summer

While they have only been dating for around three months, it is now being reported that James and Mariah have already talked about getting married.

"James wants to marry her sooner rather than later, and she is very open to the idea," a source told TMZ, adding that starting a family together could also be on the cards.

"Mariah feels that having a child with James would be a blessing from God. She wants another child and is telling friends she's not too old."