In the clip, posted on the Smile singer's Instagram page, Lily can be seen shaking her hips to Beyonce's Yonce track.
Wearing a skimpy silver sequinned dressed, Lily shows off her svelte figure and sexy dance moves for the video.
Alongside the post, she wrote: "Getting ready #Brussels yo."
The mum-of-two, who claimed to have retired from the music world before giving birth to her eldest daughter, Ethel, has made a comeback in recent months.
Along with releasing new music, the star has slimmed-down and propelled herself back into the limelight.
Watch the video of Lily dancing to Beyonce here: