Madonna fans question whether the singer, 60, has had butt implants as she debuts shock new curves on stage

Madonna's fans questioned whether the 60-year-old has had her derriere cosmetically enhanced after a video was released of her performing live on stage. 

The 60-year-old performed alongside her son David Banda, 13, at the famous New York gay bar Stonewall Inn in New York on New Year's Eve. 

Queen of reinvention: When Perez Hilton shared the video, fans wrote things like: 'Oh gosh Madonna why did you get that horrible fake butt?'

The special surprise performance marked the 50th anniversary of the Stonewall Uprising.

And while fans loved her performance, many noticed her changing shape and took to the comments section to express their thoughts.

When Perez Hilton shared the video, fans wrote things like: 'Oh gosh Madonna why did you get that horrible fake butt?'