Watch Sia's Grammy Performance In HD

Sia - Chandelier (Live GRAMMYs 2015 feat. Kristen Wiig & Maddie Ziegler)

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Woop! The HD videos of the Grammy performances are here!

Sia's 'Elastic Heart' and 'Chandelier' are two of the stand out music videos of the past twelve months and it looks like the live performances are just as incredible.

The Australian singer bought the house down performing at the 57th Annual Grammy Awards in L.A this week.

On hand to provide stunning choreography and visuals was the star of the music videos, Maggie Ziegler and Saturday Night Live comedian Kristen Wiig.