Sia has unveiled a behind the scenes look at her latest music video.

The singer premiered the clip for her new single 'Elastic Heart' last week.

It sees Hollywood actor Shia LaBeouf dance in a cage with 12-year-old child star Maddie Ziegler.

A making of video has now been uploaded online and it features interviews with the cast and crew.

The striking clip, however, initially came under criticism, with some accusing the video of exhibiting lewd undertones due to the age of the two subjects.

Sia said on Twitter at the time: "I anticipated some 'pedophelia!!!' Cries for this video. All I can say is Maddie and Shia are two of the only actors I felt could play these two warring 'sia' self states.

"I apologise to those who feel triggered by #ElasticHeart My intention was to create some emotional content, not to upset anybody (sic)."

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