The 'Wrecking Ball' singer looked chic and - dare we say it - sophisticated in a low-key shirt and trouser combo designed by Maison Martin Margiela.
Miley opted for loose black trousers with yellow stripes running down each side, paired with a sleeveless white shirt buttoned all the way to the top.
The starlet slicked her blonde crop into a side-swept quiff while flaunting fuss-free make-up with lashings of mascara and a pale pink pout.
But she was soon back to her risqué ways as she donned a barely-there festive outfit before taking to the stage at the New York-based bash.
Miley rocked the same saucy sequin ensemble she wore to KIIS FM's Jingle Bell Ball in LA, consisting of racy high-leg pants which left little to the imagination.
She added a matching crop top complete with furry white cuffs, topping her daring look with studded cowboy boots and pompom earrings.
The former Disney star set tongues wagging with her performance yet again, twerking alongside a man dressed up as Father Christmas.
Before heading out on stage Miley took to Twitter to post a behind the scenes snap, which showed one of her dancers slicking her pout with an EOS lip balm, £5.99.
Miley's not the only one with a soft spot for the quirky round lip conditioners - we've spotted both Kim Kardashian and Nicole Scherzinger using them too.
The 21-year-old captioned her picture: "Almost Bad Santa time! Just one final @eos touch up by @freakabritt before we hit the stage!!"
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