The video for the track, which is the latest release from the Chandelier singer‘s album 1000 Forms of Fear, featured controversial actor Shia LaBouef and 12-year-old dancer Maddie Ziegler.
The controversy stems from provocative dance scenes performed by the pair which sees them interacting with each other within a giant bird cage.
Maddie is wearing a nude coloured leotard while the Transformers star sports a pair of flesh covered leggings which, on first glance, gives both performers the appearance of nudity.
Maddie is seen adopting a variety of poses and at some points in the video, Shia and Maddie's bodies are completely entwined with each other.
The closing scene of the video sees a distraught Maddie attempting to extract herself from a bearded 28-year-old Shia’s grip.
Determined to clear up any confusion, the concerned singer, Sia, took to Twitter, saying: “I apologise to those who fell triggered by #ElasticHeart. My intention was to create some emotional content, not to upset anybody.”
Defending the video which was released yesterday, the 38-year-old singer said: "All I can say is Maddie and Shia are two of the only actors I felt could play these two warring 'Sia' self-states."
