Singer Michael Buble attends the 20th annual Fulfillment Fund Stars benefit gala in Beverly Hills, Calif. on Oct. 14, 2014.
Tommaso Boddi—Getty Images
April 17, 2015 12:03 PM EDT

Fans aren’t too happy with Michael Bublé after the singer posted a photo of a woman’s behind to his Instagram.

The “Haven’t Met You Yet” singer, 39, posted a shot of himself posing in front of an unidentified female wearing shorts, along with a caption singling out the woman’s butt Monday.

“There was something about this photo lu took, that seemed worthy of Instagram,” Bublé wrote. It appears that his wife Luisana Lopilato, 27, took the photo while vacationing in Miami with the performer.

He also followed the comment with several rear-end-related hashtags: #myhumps #babygotback #hungryshorts#onlyinmiami #picoftheday #beautifulbum.

But not all social media users found the Canadian artist’s picture worthy of Instagram, taking to the photo-sharing platform and Twitter to criticize Bublé for his comments, which many interpreted as body shaming.

However, some commenters came to the singer’s defense, arguing that the post wasn’t mean-spirited.

“So he’s admiring a nicely shaped butt. Big deal!” an Instagram user wrote.

“I’m on team Michael and Lu on this one! How is this body/booty shaming? People need to relax!” another user said.

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