Britney Spears performed a surprise show in Las Vegas on Friday night, 25 March.

The mini-concert at Rain nightclub inside the Palms Casino and Resort was confirmed just hours before it took place. Britney tweeted: "Looks like my little secret isn’t a secret anymore. Who’s coming to watch me take the stage TONIGHT? You're all invited. Be there or be square bitch!"

After Jersey Shore’sWill.I.Amhas produced for her Femme Fatale album, which was remixed to include previous hits Gimme More, Slave 4 U and 3. For the finale, new single Till The World Ends, Britney donned a black bodysuit covered in red lights and climbed a platform above the stage as pyrotechnics lit up the room.

Afterwards lucky fans gave rave reviews. “It was fantastic. Britney Spears, she looks stellar,” one said. “She killed it. She really brought it.”

Following the show, the Toxic singer tweeted that she was thrilled to be back doing what she does best. "OMFG it feels good to be on stage again!"

The concert was filmed for an upcoming MTV special.