"This is my version of Snapchat or TikTok or whatever the cool thing you're supposed to do these days !!!!! As you can see I’m not really dancing folks …… I’m just very bored," she wrote.
"PS I know we had one of the world's biggest breakups 20 years ago …… but hey the man is a genius !!!! Great song JT !!!! Pssss if you KNOW WHAT'S GOOD," she cheekily added.
Timberlake and Spears broke up back in 2002 after dating for three years. . In December of the same year, Timberlake released "Cry Me a River," and the tune was widely believed to be about Spears, especially after the accompanying music video featured a blonde look-alike.
But that's all water under the bridge now. See Spears' dance party below.