EXCLUSIVE: Mariah Carey Jokes About Wearing Negligees at Home and Dishes on Her One Dressing Room Essential

Mariah shared one of her most Mimi moments ever in a pic featuring the icon making pizza in a negligee, and she opened up about the moment.

Mariah Carey shared one of her most Mimi moments ever earlier this month in an Instagram pic featuring the music icon making pizza in a negligee, and she opened up about it with ET.

"I wear negligees at home, and then I wear regular clothes when I have to," Carey joked with ET backstage after her Paris stop for her Sweet Sweet Fantasy Tour last week.

WATCH: Mariah Carey Dons Sexy Lingerie and Heels While Showing Off Her Pizza-Making Skills

The photo provided a sweet look into her home life, as she was in the kitchen with her 4-year-old daughter, Monroe, in Italy.

Carey fans will get an unprecedented look inside the pop diva's tour life on the upcoming E! series, Mariah's World, but she told ET that her personal life is still guarded.

"I'm still a private person," the GRAMMY winner said. "Trust me. I'm like, 'Cameras? Really? I'm dressing!'"

WATCH: Mariah Carey Dishes on Planning 'Traditional' Wedding to James Packer

While the cameras are rolling almost all the time, Carey wanted to get one thing straight: Mariah's World is not a reality show.

"It's not a reality moment," she insisted. "Anybody that's trying to be shady and write that -- they just look like a clown. They're going to look like an idiot when they see it."

The eight-part docuseries has been shooting since at least February and will follow the superstar's tours of Europe and South Africa.

WATCH: Inside Mariah Carey's Ultra-Glam Stay at a $12K Per Night Italian Villa

"This is what it is: You're seeing behind the scenes of a tour and people don't really show that," Carey explained. "Some people show it, but this is different, because I don't really show that."

During our backstage visit with the international superstar, we learned about the essentials for her dressing room, which featured velvet curtains, soft lighting and wine.

"You want to know my one [essential]?" she said, picking up a stuffed lamb doll. "Here it is, right here -- the lamb."

The stuffed animals are gifts from her fans who call themselves lambs.

As the queen of multi-tasking, Carey is also planning her wedding to fiancé James Packer while touring and shooting her series, but she said if the wedding appears on the series at all, it would only be snippets.

WATCH: Mariah Carey Reacts to Prince's Death

"Some things need to be private," Carey noted.

Following her Sweet Sweet Fantasy Tour, which ends May 2 in Johannesburg, South Africa, the 46-year-old singer will get a short break before she resumes her Las Vegas residency at Caesar's Palace on June 7.