The Air Balloon singer posted a video of herself earlier this evening (27 May), wearing nothing but a pair of the tummy-control pants.
In the clip, the star has one arm around her boobs, with her other hand holding her phone and taking the video.
But, instead of it stopping there, Lily goes on to dance for the camera!
She shakes her hips and grinds to the music - and at one point even sings along.
Alongside the video, the mum-of-two wrote: "Cool mum #drakespanxdance."
Watch Lily's dance below:
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