Check Out Celine Dion Accidentally Photobombing Her Fans' Engagement Moment

Matt Stroshane/Disney via Getty Images
Celine Dion performs at Disney's Grand Floridian Resort & Spa hotel Dec. 4, 2009 in Lake Buena Vista, Florida, while taping the "Disney Parks Christmas Day Parade" holiday TV special. 

Celine Dion accidentally photobombed a backstage marriage proposal at her Caesars Palace show on Friday (Feb. 3) and the picture is priceless. The moment happened during a Las VEgas meet-and-greet session when Nick Janevski surprised his girlfriend Austin McMillan just as the couple were lined up to meet the "My Heart Will Go On" singer.

"@celinedion is about the only person i wouldn't mind photobombing the pictures of our proposal," McMillan wrote in the caption to the amazing pic snapped behind the scenes as the Colosseum, where Dion has an ongoing residency.

Here's a view of the moment when Janevski got down on one knee in front of McMillan (and Dion.) "When @celinedion is just as shocked as you are at your PROPOSAL!!!" she wrote.