Britney Spears' Best Vegas Costumes

It's Britney, Bitch and I do sing live.

In what seems to be a clap back at her haters, the pop icon took a moment to bring her bodyguard Jacob on stage at her concert in Singapore to wish him a very happy birthday.

“I have a really special friend tonight. He’s been with me - I’m gonna cry - for like five years,” Spears said to her concert-goers. “He’s one of my favorite people. His name is Jacob. Everyone, let’s sing happy birthday!”

But what came next was completely unexpected by Spear’s fans. She belted out a full-bodied performance dragging out the lyrics to show off her raw vocals.

This impromptu performance comes on heels of a recent interview with Israeli TV in which she addressed the career-spanning lip sync accusations.

“A lot of people thing that I don’t sing live. I do usually - because I’m dancing so much - I do have a little bit of playback, but there a mixture of my voice and the playback. It really pisses me off because I’m busting my a— out there and singing at the same time, and nobody ever really give me credit for it. You know?” Spears told Channel 2.

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