Britney Spears "Feels Good" After Impromptu Las Vegas 'Femme Fatale' Performance

With her new album Femme Fatale slated to be released next week, Britney Spears gave fans even more to look forward to as she gave two impromptu performances to the crowd at Rain Nightclub in Las Vegas on Friday night and gushed about being on stage again after the show.

According to E! Online, the mom of two first did a private show at the Palms Hotel and Casino at 8 PM, but then went back on stage at midnight to perform for her fans.

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"Looks like my little secret isnt a secret anymore. Whos coming to watch me take the stage TONIGHT at @RainLasVegas at @PalmsLasVegas?" Britney tweeted at 9:15 AM that morning, prompting fans to rush to buy tickets at $60 each.

During her set, Britney sang three songs off of her new album including “Big Fat Bass” and “Hold It Against Me,” before Jersey Shore's DJ Pauly D warmed up the crowd in the DJ booth.

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After the mini-concert, Brit took to her Twitter again, explaining how exciting it was for her to be performing in front of a crowd.

“OMFG it feels good to be on stage again!!” the "Toxic" singer tweeted.

Femme Fatale will be released this Tuesday, March 29.