Britney Spears sent fans into a frenzy as she posted three super sexy and super mysterious Instagram videos back-to-back on Monday, Us Weekly reported. The 34-year-old showed off her toned figure as she rolled around on the floor in a black bikini during all three videos, dancing to Nathaniel Rateliff & the Night Sweats' 2015 hit "S.O.B."

Spears danced in slow motion to the folk rock tune, whipping her hair around as she showed off her toned abs, legs and arms in the shots. Each video was shot in black and white and set to a clip from Rateliff's song and posted to her official Instagram without captions.

Fans speculated that the videos could serve as a teaser of what's to come for Spears' upcoming return to her Las Vegas show residency, "Piece of Me," Billboard reported, which is set to kick off next month.

The news comes just five days after the mom of two uploaded clips of herself practicing with her dancers. In each of the Instagram videos, Spears is seen wearing a white fitted crop top and black sweatpants as she rehearsed a sexy dance routine set to her song "Breathe On Me," from her 2003 album "In the Zone."

"It's so hot in here... #PieceOfMe," the pop star wrote in the caption for the first video, then followed up with a second caption, "Just put your lips together and blow... #PieceOfMe."

Watch all three of Spears' sexy Instagram videos below.

A video posted by Britney Spears (@britneyspears) on Jan 25, 2016 at 2:23pm PST

A video posted by Britney Spears (@britneyspears) on Jan 25, 2016 at 2:29pm PST