Mariah Carey flaunts incredible physique 2 months after weight loss surgery

Mariah Carey is looking better than ever!

One week after postponing her Christmas tour due to a respiratory infection, the legendary singer stepped out for the 30th anniversary celebration of AHF World AIDS Day at the Shrine Auditorium in Los Angeles on Thursday night.

SEE ALSO: Mariah Carey received 'multimillion-dollar settlement' from ex-fiance James Packer, kept engagement ring

The singer looked absolutely stunning in a figure-hugging black dress with two slits that ran all the way up her body, fastened with hundreds of clothes pins. Carey finished off the cleavage-baring ensemble by letting her signature locks flow down her back and donning a ton of bling.

Carey performed at the star-studded celebration, too.

See Mariah Carey's latest look below:

33 PHOTOS
Mariah Carey out and about in 2017
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Mariah Carey out and about in 2017
LOS ANGELES, CA - NOVEMBER 30: Mariah Carey attends the AHF World AIDS DAY Concert and 30th Anniversary Celebration featuring Mariah Carey and DJ Khaled at the Shrine Auditorium on November 30, 2017 in Los Angeles, California. (Photo by Tommaso Boddi/Getty Images for AIDS Healthcare Foundation)
LOS ANGELES, CA - NOVEMBER 30: Mariah Carey performs onstage during the AHF World AIDS DAY Concert and 30th Anniversary Celebration featuring Mariah Carey and DJ Khaled at the Shrine Auditorium on November 30, 2017 in Los Angeles, California. (Photo by Tommaso Boddi/Getty Images for AIDS Healthcare Foundation)
HOLLYWOOD, CA - NOVEMBER 01: Mariah Carey is honored with Hand and Footprint Ceremony at TCL Chinese Theatre on November 1, 2017 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
HOLLYWOOD, CA - NOVEMBER 01: Mariah Carey is honored with Hand and Footprint Ceremony at TCL Chinese Theatre on November 1, 2017 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
HOLLYWOOD, CA - NOVEMBER 01: Mariah Carey Hand And Footprint Ceremony at TCL Chinese Theatre on November 1, 2017 in Hollywood, California. (Photo by Steve Granitz/WireImage)
NEW YORK, NY - OCTOBER 23: Mariah Carey attends V Magazine honors Karl Lagerfeld after party at Le Bain on October 23, 2017 in New York City. (Photo by Gotham/WireImage)
NEW YORK, NY - OCTOBER 23: Mariah Carey at a dinner honoring Karl Lagerfeld on October 23, 2017 in New York City. (Photo by Gotham/GC Images)
LOS ANGELES, CA - SEPTEMBER 17: Mariah Carey performs onstage during VH1 Hip Hop Honors: The 90s Game Changers at Paramount Studios on September 17, 2017 in Los Angeles, California. (Photo by Maury Phillips/Getty Images)
BELLEVUE, WA - SEPTEMBER 06: Global Icon Mariah Carey Announces Mariah Carey Christmas Factory During The Grand Opening Of Sugar Factory American Brasserie on September 6, 2017 in Bellevue, Washington. (Photo by Mat Hayward/Getty Images for Sugar Factory American Brasserie)
NEW YORK, NY - AUGUST 19: (EXCLUSIVE COVERAGE) Mariah Carey and Bryan Tanaka perform in Concert - New York, New York at Madison Square Garden on August 19, 2017 in New York City. (Photo by Nicholas Hunt/Getty Images for imPRint)
NEW YORK, NY - AUGUST 17: Singer Mariah Carey and Bryan Tanaka are seen out on August 17, 2017 in New York City. (Photo by Raymond Hall/GC Images)
MIAMI BEACH, FL - AUGUST 10: Mariah Carey and her children Moroccan and Monroe attend the Mariah Carey concert after party at Sugar Factory American Brasserie on Ocean Drive on August 10, 2017 in Miami Beach, Florida. (Photo by Alexander Tamargo/Getty Images for Sugar Factory American Brasserie)
CORRECTION - US Singer Mariah Carey speaks at a press conference to announce an agreement with Israeli cosmetics brand Premier Dead Sea, in the coastal city of Tel Aviv on June 26, 2017. / AFP PHOTO / JACK GUEZ / The erroneous mention[s] appearing in the metadata of this photo by JACK GUEZ has been modified in AFP systems in the following manner: [Dead Sea] instead of [Red Sea]. Please immediately remove the erroneous mention[s] from all your online services and delete it (them) from your servers. If you have been authorized by AFP to distribute it (them) to third parties, please ensure that the same actions are carried out by them. Failure to promptly comply with these instructions will entail liability on your part for any continued or post notification usage. Therefore we thank you very much for all your attention and prompt action. We are sorry for the inconvenience this notification may cause and remain at your disposal for any further information you may require. (Photo credit should read JACK GUEZ/AFP/Getty Images)
PARIS, FRANCE - JUNE 24: Singer Mariah Carey leaves the Plaza Athenee Dorchester Collection Hotel on Avenue Montaigne on June 24, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
LOS ANGELES, CA - MAY 25: Mariah Carey is seen on May 25, 2017 in Los Angeles, California. (Photo by gotpap/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MAY 20: Mariah Carey is seen at 'Catch' on May 20, 2017 in Los Angeles, California. (Photo by BG008/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MAY 13: (L-R) Monroe Cannon, Nick Cannon, Mariah Carey and Moroccan Scott Cannon attend the Moroccan Scott Cannon and Monroe Cannon Party on Mary 13 in Los Angeles, California. (Photo by Rich Polk/FilmMagic)
LOS ANGELES, CA - MAY 13: Singer Mariah Carey attends the Moroccan Scott Cannon and Monroe Cannon Party on Mary 13 in Los Angeles, California. (Photo by Rich Polk/FilmMagic)
LOS ANGELES, CA - MAY 04: Mariah Carey attends Mishka Bulochnikov's 14th Birthday Celebration at Tao Los Angeles on May 4, 2017 in Los Angeles, California. (Photo by FilmMagic/FilmMagic)
WEST HOLLYWOOD, CA - MAY 01: Mariah Carey attends the MC Records Launch Party, a joint venture with Epic Records at CATCH LA on May 1, 2017 in West Hollywood, California. (Photo by FilmMagic/FilmMagic)
ANAHEIM, CA - APRIL 30: (L-R) Monroe Cannon, Nick Cannon, Mariah Carey, and Moroccan Cannon pose with Disney characters at Disneyland on April 30, 2017 in Anaheim, California. (Photo by FilmMagic/FilmMagic)
LOS ANGELES, CA - MARCH 11: (L-R) Monroe Cannon, TV personality Nick Cannon, Moroccan Scott Cannon and singer Mariah Carey arrives at the Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - MARCH 11: Recording artist/singer Mariah Carey (L) and Moroccan Cannon arrive at the Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage)
BEVERLY HILLS, CA - FEBRUARY 26: Mariah Carey attends the 2017 Vanity Fair Oscar Party hosted by Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by Anthony Harvey/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 26: Mariah Carey attends the 2017 Vanity Fair Oscar Party hosted by Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by Anthony Harvey/Getty Images)
LOS ANGELES, CA - FEBRUARY 15: Mariah Carey and Bryan Tanaka are seen on February 15, 2017 in Los Angeles, CA. (Photo by gotpap/Star Max/GC Images)
LOS ANGELES, CA - FEBRUARY 15: Mariah Carey is seen at 'Jimmy Kimmel Live' on February 15, 2017 in Los Angeles, California. (Photo by BG017/Bauer-Griffin/GC Images)
LOS ANGELES, CA - FEBRUARY 15: Mariah Carey is seen at 'Jimmy Kimmel Live' on February 15, 2017 in Los Angeles, California. (Photo by RB/Bauer-Griffin/GC Images)
LOS ANGELES, CA - FEBRUARY 15: Mariah Carey (L) and Bryan Tanaka attend a basketball game between the Atlanta Hawks and the Los Angeles Clippers at Staples Center on February 15, 2017 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)
WESTWOOD, CA - FEBRUARY 04: Actress/singer Mariah Carey arrives at the premiere of Warner Bros. Pictures' 'The LEGO Batman Movie' at Regency Village Theatre on February 4, 2017 in Westwood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 04: (L-R) Gerrick Kennedy, Mariah Carey and guest attend a private party at Catch for Mariah Carey's New Single 'I Don't' ft YG at Catch LA on February 4, 2017 in West Hollywood, California. (Photo by FilmMagic/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 04: Singer Mariah Carey attends a private party at Catch for Mariah Carey's New Single 'I Don't' ft YG at Catch LA on February 4, 2017 in West Hollywood, California. (Photo by FilmMagic/FilmMagic)
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The outing comes about a month after news broke that she'd undergone a secret weight loss surgery in September. Carey reportedly got the gastric sleeve surgery, which shrinks the size of the stomach so patients eat less.

She had been feeling "extremely insecure about her weight," a source told ET at the beginning of November.

"She always fluctuates and it makes her upset," the source said. "She lives in denial about it; she has the tags cut out of clothes, so she can be blissfully unaware of her size."

SEE ALSO: Mariah Carey is 'happy' for new chapter in her life following weight loss surgery 

"This is a new beginning for her," the source added.

For more of Mariah Carey's transformation through the years, check out the gallery below of photos from throughout her storied career:

18 PHOTOS
Mariah Carey through the years
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Mariah Carey through the years
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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