Britney Spears released the single cover of her upcoming song, Work B--tch, via Twitter on Thursday.

"4 days people! Go call the Po-Lice! Go call the Governor! #WorkB" the 31-year-old tweeted, along with the cover art.

The cover is Las Vegas themed and displays Spears in a leotard and boa. The blonde-haired singer poses in front of a mirror. Fans who were awed by the cover called Spears "amazing," "beautiful" and a "queen" on Twitter.

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On Wednesday, the star also tweeted a photo which revealed that the song is written by will.i.am, former Swedish House Mafia DJ Sebastian Ingrosso, Swedish producer/DJ Otto Jettman, Irish singer/songwriter Ruth-Anne Cunningham and Antony Preston.

"5 days and it's all yours...," she captioned the shot.

Spears previously flaunted her toned bikini body in two photos from the set of what is presumed to be the video for the upcoming song.

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In the first picture posted on her Instagram page on Sunday, the star posed in a gold and black cropped bustier and long black gloves. The picture appears to be a snapshot from the song's video. The other photo shows the blonde singer in a blue two-piece bathing suit.

"Gonna get my tan on in the desert in between shots on the #WorkB--ch set today. It's HOT out here people!!!! #desert #heatwave #WorkB--chDay2," she captioned the photo.

The 31-year-old is also busy working on her next album, one that she said will be different than her previous seven records.

"Really excited to give you a taste of my new album. Can't wait to share what I've been working on," she wrote on Twitter in July. "Going to be my most personal album ever."

The album will be the follow-up to 2011's Femme Fatale. That record, which featured hits Till The World Ends and Hold It Against Me, peaked at No. 1 on Billboard.

Tags: Britney Spears