Demi Lovato Sings 'Let It Go' in Show-Stopping Live Performance

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Demi Lovato does the Frozen tune justice.

Does it get any better than Demi Lovato singing Frozen's "Let It Go?"

The 22-year-old belted out the now classic Disney tune at the annual Royal Variety Performance in London last month, though the footage only became available earlier this week.

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Technically, the song isn't a cover, as Demi actually recorded an official version of the song for the film's soundtrack.

But perhaps even more notable than Demi's predictably stellar vocals in the performance, is her show-stopping Ashi mullet-hem dress, which was adorned with feathers and a sparkly belt.

... Looking good Demi!

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ET was actually with Frozen stars Kristen Bell, Josh Gad and Idina Menzel last October, before the animated film became such a massive hit.

Check out the video below to hear how the movie made Kristen's dream come true.