The singer wore nothing but boots, a thong bodysuit, a hat and a smile while rocking out to the song from JT's 2002 debut album.

In the clip, which she shared without a caption, Spears wore a sheer black bodysuit, black suede boots and tan cowboy hat as she moved along to the music in front of a fireplace.

Britney Spears' latest dancing video not only features ex Justin Timberlake's music — she's doing her whole routine to the 2002 track. The "...Hit Me Baby One More Time" hitmaker, 43, frequently shares videos of herself dancing on Instagram,