Britney Spears enjoys night off in Las Vegas by experiencing Thunder From Down Under with her mom

Now get to work, Thunder From Down Under.

As Britney Spears enjoyed a night off from her Las Vegas residency, the "Toxic" singer traveled to the Excalibur with her close friends for a sexy little show.

E! News has learned Britney along with her mom and several backup dancers enjoyed Thursday night's performance of Thunder From Down Under that included seductive dance routines, cheeky humor and plenty of chiseled bodies.

If that wasn't enough, E! News confirmed that one of Britney's backup dancers was asked to come on stage during the show. In addition, one of the performers appeared at Britney's table during the act.

"Britney was fun shocked," a source shared with E! News. "She had a great time. She was laughing and enjoyed it. She was a really good sport."

After the show, Britney and her mom were lucky enough to meet some of the guys backstage.

"Girls night out with the boys from down under," she wrote on Instagram. "Just a night off in Vegas."

Before Britney heads back to her own stage tonight at Planet Hollywood as part of her "Britney: Piece of Me" show, the singer may also be celebrating Britney Spears Day.

Back in 2014, Caesars Entertainment announced that the pop star would be honored with her own holiday on the Vegas strip every November 5.

Perhaps it's only fitting for a singer who continues to sell out shows night after night.