What is he up to by posting on instagram a photo of a woman with hashtag "beautifulbum"?

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 Michael Buble faced a backlash after he posted a photograph online of a woman accompanied with the hashtag “beautifulbum” according to Evening standard.uk.

Many fans of the Canadian singer were left unhappy and accused the 39-year-old of “body-shaming” the anonymous woman shown in the image wearing tight shorts.

Buble was on holiday with his family in Miami at the time.

He quickly posted back on instagram to appease to his fans. See what he wrote;