EXCLUSIVE: Mariah Carey says 'f**king nobody' is good enough to perform at her wedding

Mariah Carey Confirms Her Twins Will Be in Her Wedding: 'They'll Always Be with Me'

This might be the most Mariah Carey Mariah Carey moment ever.

The elusive chanteuse was out and about in New York City on Sunday and pulled the diva card when asked who is qualified to sing at her upcoming wedding to billionaire fiancé James Packer. Mariah is truly the only person who could get away with an answer like this.

Her dream wedding singer? "F**king nobody. Bye!" she declared.

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

ET caught up with the 46-year-old songstress at the NBC Universal Upfronts on Monday, where Mariah, who donned a sequined tiger-striped minidress and fishnets, delivered even more diva antics and confirmed she is so not a morning person.

See photos of Mariah Carey through the years:

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Mariah Carey through the years
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EXCLUSIVE: Mariah Carey says 'f**king nobody' is good enough to perform at her wedding
NEW YORK, NY - FEBRUARY 12: Singer Mariah Carey and Nick Cannon attend MTV First: Mariah Carey's 'You're Mine (Eternal)' music video world premiere at MTV Studios on February 12, 2014 in New York City. (Photo by Larry Busacca/Getty Images)
LOS ANGELES, CA - JANUARY 18: Mariah Carey and Nick Cannon (R) arrive at the 20th Annual Screen Actors Guild Awards at the Shrine Auditorium on January 18, 2014 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
NEW YORK, NY - AUGUST 05: Nick Cannon (L) and Mariah Carey attend Lee Daniels' 'The Butler' New York premiere, hosted by TWC, DeLeon Tequila and Samsung Galaxy on August 5, 2013 in New York City. (Photo by Kevin Mazur/Getty Images for Samsung)
HOLLYWOOD, CA - NOVEMBER 17: TeenNick Chairman and HALO Awards host Nick Cannon and singer Mariah Carey attend Nickelodeon's 2012 TeenNick HALO Awards at Hollywood Palladium on November 17, 2012 in Hollywood, California. The show premieres on Monday, November 19th, 8:00p.m. (ET) on Nick at Nite. (Photo by Charley Gallay/Getty Images For Nickelodeon)
NEW YORK, NY - DECEMBER 15: Mariah Carey leaves the Beacon Theater on December 15, 2014 in New York City. (Photo by James Devaney/GC Images)
LOS ANGELES, CA - MARCH 14: Mariah Carey (L) and actor Jussie Smollett attend the Human Rights Campaign Los Angeles Gala 2015 at JW Marriott Los Angeles at L.A. LIVE on March 14, 2015 in Los Angeles, California. (Photo by Jason Kempin/Getty Images for Human Rights Campaign)
NEW YORK, NY - DECEMBER 03: Mariah Carey performs at the 82nd Annual Rockefeller Christmas Tree Lighting Ceremony at Rockefeller Center on December 3, 2014 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 03: Singer Mariah Carey performs at the 82nd Annual Rockefeller Center Christmas Tree Lighting on December 3, 2014 in New York City. (Photo by Paul Zimmerman/WireImage)
SHANGHAI, CHINA - OCTOBER 19: Singer Mariah Carey performs live during her 2014 China Tour on October 19, 2014 in Shanghai, China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
NEW YORK NY - AUGUST 26: Mariah Carey sighting on August 26, 2014 in New York City. (Photo by Josiah Kamau/BuzzFoto/FilmMagic)
HOLLYWOOD, CA - JULY 23: Singer Mariah Carey and actor Dwayne Johnson attend the after party for the premiere of Paramount Pictures' 'Hercules' at the Roosevelt Hotel on July 23, 2014 in Hollywood, California. (Photo by Alberto E. Rodriguez/WireImage)
CAP D'ANTIBES, FRANCE - JUNE 17: Mariah Carey performs during Clear Channel Media And Entertainment And MediaLink Dinner at Hotel du Cap-Eden-Roc on June 17, 2014 in Cap d'Antibes, France. (Photo by Tony Barson/Getty Images for Clear Channel)
NEW YORK, NY - JUNE 09: Singer Mariah Carey announces the launch of her Go N'Syde bottle 'Butterfly' at the Saint Regis Hotel on June 9, 2014 in New York City. (Photo by Andrew H. Walker/Getty Images)
NEW YORK, NY - MAY 29: Singer Mariah Carey attends the 2014 Fresh Air Fund Honoring Our American Hero at Pier Sixty at Chelsea Piers on May 29, 2014 in New York City. (Photo by Monica Schipper/FilmMagic)
Mariah Carey performs during the World Music Awards at Monte Carlo Sporting Club, on May 27, 2014 in Monaco.  (Photo credit: VALERY HACHE/AFP/Getty Images)
TODAY -- Pictured: Mariah Carey appears on NBC News' 'Today' show -- (Photo by: Peter Kramer/NBC/NBC NewsWire via Getty Images)
here's the cover of my new album #1 To Infinity! Pre-order tomorrow @ 10am ET on http://t.co/pJ1014UBpg #1toInfinity http://t.co/ffO32ha7f9
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"I know it's not morning attire, but I don't care," she told ET's Leanne Aguilera of her ensemble. "I don't know what a morning is..."

Perhaps being out of bed so "early" explains why she lost one of her Louboutin heels and nearly took a tumble on the red carpet?

WATCH: Mariah Carey Quotes 5-Year-Old Son During Acceptance Speech at the GLAAD Media Awards

But back to the wedding business: Even though no one else is good enough for her, Mariah also told us that "of course" she won't be performing at her wedding herself.

"Of course I'm not going to perform at my wedding. It's not even gonna be like that," she told ET. "I'm not even sure someone is performing. It's more gonna be a small thing. We already did the thing with the ring. So, you know, it's over the top already! It's over the top enough."

You can get a look at her over-the-top wedding planning and the rest of her over-the-top life in the first preview for her new E! docuseries -- Mariah does not want you to call it a reality show -- Mariah's World, now:

Mariah recently told ET that she and James plan to have a "traditional" wedding. Find out what else she exclusively told us about her big day and her wedding dress in the video below.

Mariah Carey on Her 'Traditional' Wedding to James Packer: She Already Has Her Dress


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