Celine Dion is shocked when fan proposes in front of her, invites herself to the wedding!



Celine Dion didn't know what to do when a meet-and-greet turned into a marriage proposal over the weekend.

Before one of her residency shows in Las Vegas, Nevada, on Friday, she happily greeted her fan, Austin McMillan, and her boyfriend, Nick Janevski. McMillian tells ET that after the first photo was taken with the 48-year-old singer, Janevski "got down on one knee" and popped the question.

"I was shocked and couldn't get any words out, so Celine backed up into the curtain behind us and said, 'Are you going to say yes?'" McMillian, 24, recalls. "Celine was shocked and I was too. She was super sweet and wished us a long and happy marriage like she had with her husband [René Angélil]. Then [she] invited herself to the wedding!"

WATCH: Celine Dion Says Late Husband Rene Angelil Is the Only Man She Has Ever Kissed

McMillian isn't exaggerating when she says Dion was not ready to witness the marriage proposal, as her mouth dropped when Janevski, 24, took a knee. "Celine Dion is about the only person I wouldn't mind photo bombing the pictures of our proposal," the bride-to-be quipped on Instagram. "I'm still floating around in the clouds over here, feeling like it's a dream!! My heart is so happy!! What a dream come true."

"There are no words to describe this moment!" McMillian added in another photo caption. "What I thought was just going to be a special night seeing my favorite performer, turned out to be a night filled with so much happiness, surprise and celebration."

WATCH: Celine Dion and Kathie Lee Gifford Tear Up Talking About Their Late Husbands -- 'We Were Both Extremely Lucky'

Last month, Dion remembered her late husband on the one-year anniversary of his death by sharing a lovely video montage to Facebook. "Today, January 14th, it's been a year since René left us," Dion said of her husband of 21 years. "He will always be in our hearts. -Team Céline ❤."

Reporting by Brice Sander.

PHOTOS: Check out Celine's fun reactions at a Paris Fashion Show

27 PHOTOS
Celine Dion at Paris Couture Week
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Celine Dion at Paris Couture Week
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda, Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda, Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion attends the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion attends the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Antonio de Moraes Barros Filho/WireImage)
PARIS, FRANCE - JULY 04: Singer Celine Dion attends the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Marc Piasecki/WireImage)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda, Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda, Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Singer Celine Dion attends the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Dominique Charriau/WireImage)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda; Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda, Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion and Giambattista Valli attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: (L-R) Bianca Brandolini d'Adda, Celine Dion and Ines de la Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
PARIS, FRANCE - JULY 04: Bianca Brandolini D'Adda; Celine Dion and Ines de La Fressange attend the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion attends the Giambattista Valli Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - JULY 04: Singer Johnny Hallyday standing between his wife Laeticia (L) and singer Celine Dion attend the Christian Dior Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion is seen arriving at Dior Fashion show during Paris Fashion Week : Haute Couture F/W 2016-2017 on July 4, 2016 in Paris, France. (Photo by Jacopo Raule/GC Images)
PARIS, FRANCE - JULY 04: Singer Celine Dion attends the Christian Dior Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - JULY 04: Celine Dion arrives at the Christian Dior Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Pierre Suu/GC Images)
PARIS, FRANCE - JULY 04: (L-R) Singer Celine Dion and Owner of LVMH Luxury Group Bernard Arnault attend the Christian Dior Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - JULY 02: Singer Celine Dion leaves the 'Art District' apartments on July 2, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JULY 02: Singer Celine Dion leaves the 'Art District' apartments on July 2, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 29: Singer Celine Dion leaves the 'Art District' apartments on June 29, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 29: Singer Celine Dion leaves the 'Art District' apartments on June 29, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 28: Singer Celine Dion leaves the 'Art District' apartments on June 28, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 28: Singer Celine Dion leaves the 'Art District' apartments on June 28, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 28: Singer Celine Dion leaves the 'Art District' apartments on June 28, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
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