The 58-year-old singer has been the victim of criticism online.

Madonna is known for her changing looks and has become something of a style icon throughout the years. After so many different phases in her career and makeovers, she is known for being a real chameleon when it comes to her hair, clothes or looks. One recent appearance Madonna has made has left fans talking, and not with any praise for the singer. In Miami Beach in the US, the Living for Love singer was performing with Ariana Grande at an Art Basel event but as she danced with Ariana, the pair began to twerk. As Madonna attempted to twerk, the movement of her bum left viewers thinking that her bottom may have had some surgical involvement.

#arianagrande and #madonna twerk it at #artbasel pic.twitter.com/6NSBM3pqVQ

— BallerAlert (@balleralert) December 3, 2016

Madonna's bum !? She has so much money to get it done properly wth https://t.co/5zsYzC14OH

— toronto bound. (@adebongaa_ox) December 3, 2016

Oml what's going on with Madonna's bum ?? https://t.co/101ndHsGNZ

— Yasmin (@Yazmalc) December 3, 2016

SOOOO MADONNA HAS BUM IMPLANTS NOW WTF IS GOING ON LOL https://t.co/ztrUvDJYwZ

— Sharlene Klarice (@SharleneKlarice) December 3, 2016

Madonna's butt what the hell pic.twitter.com/CXRNcOhFG1

— Quavo knowles (@21yonce) December 4, 2016

It seriously hurts my soul to know that an icon such as Madonna went out and got butt implants to fit in with this new generation ??

— Paint it Mermaid.com (@PaintitMermaid) December 4, 2016