Michael Bublé has been branded a ''sexist'' by outraged fans.

The 'Haven't Met You Yet' hitmaker is currently holidaying in Miami, Florida with his wife Luisana Lopilato but has left some of his supporters fuming after he posted a photograph on his Instagram account of a woman wearing short shorts.

Sharing the picture with his one million followers on the photo-sharing website, he wrote: ''There was something about this photo lu took, that seemed worthy of Instagram. #myhumps #babygotback #hungryshorts #onlyinmiami #picoftheday #beautifulbum (sic)''.

And fans were quick to blast the 39-year-old singer for ''bullying'' the young woman.

One wrote: ''That awkward moment when @michaelbuble changes Instagram from a photo sharing application to a pulpit of bullying misogyny. (sic)''

Whilst another read: ''@michaelbuble Did you ask her permission to post that? Would you say what you hashtagged to her face?''

A third fan wrote: ''Her body and outfit isn't for your comment or consumption. The fact that you took a picture of her without her consent is disgusting. Even if this is ''shaming'' it's very disrespectful. (sic)''

Michael has yet to respond to the comments.