Oops, she did it again! Britney Spears is no stranger to making headlines, and this time the pop icon really gave critics a piece of her mind. She took a break from performing her own original hits during her Saturday, Aug. 19 concert to cover country singer Bonnie Raitt's 1991 hit song "Something to Talk About" — and she sang it live, silencing all the haters who accuse her of lip syncing during her performances.

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"I've been doing a lot of thinking lately, right? This morning I woke up… looked at the news, lot of things going on in the world and stuff," the 35-year-old told the crowd at her Las Vegas residency Piece of Me. "One minute they tear you down, and that's really horrible, and the next minute you're on top of the world, but I've never really spoke about it. I'm a Southern girl, I'm from Louisiana. I'm from the South, and I like to keep it real, so I just want to make sure I keep having you motherf–kers something to talk about."

Britney looked amazing on stage, flaunting her insanely toned body in an all-black, glittery ensemble. She sang the lyrics with sass and fans cheered as she hit every soulful note — which is obviously a product of tons of practice from her long career as an entertainer. But practice isn't the only thing that Brit has accumulated over the years — sources previously revealed to Life & Style that she's been compiling all of her journals in order to write a tell-all book, and she'll even spill the tea about her fellow pop stars like Katy Perry, Taylor Swift, and even Christina Aguilera.

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"She’s tired of hearing all these half-truths about her and wants to set the record straight about who she really is," the source said. “By the end of the book, everyone will know exactly how Britney feels about them. This book is going to surprise a lot of people.”