Michael Buble has come under fire after posting a picture of a woman online with the hashtag #beautifulbum.

The Canadian crooner put the picture, taken by his wife and showing a woman wearing tight shorts, online telling fans: “There was something about this photo lu took, that seemed worthy of instagram. #myhumps #babygotback #hungryshorts #onlyinmiami #picoftheday #beautifulbum.”

Michael, who is married to underwear model Luisana Lopilato, was immediately criticised after posting the photograph.

Michael, who has won a string of Grammy awards, has had top 10 UK hits including Haven’t Met You Yet and It’s A Beautiful Day.