Topix — Singer Britney Spears in the audience during the 52nd Annual GRAMMY Awards held at Staples Center on January 31, 2010 in Los Angeles, California. more info

People.com — The pop star wows the crowd of 1,500 with songs from her soon-to-be released Femme Fatale album more info

TMZ — Filed under: Britney Spears, Hot Vegas Britney Spears made a return to the stage last night in Las Vegas, debuting a new song called "Big Fat Bass" -- and TMZ has the video. Brit performed three songs during the mi... more info

ContactMusic — Britney Spears thrilled fans in Las Vegas on Friday night (25Mar11) by playing a surprise show at a Sin City nightclub. The pop superstar, who is preparing to launch her new album Femme Fatale, took to the stage at Rain Nightclub... more info

MTV.co.uk News — 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.... more info

Unreality Music — Britney Spears will give a special midnight performance on ‘Jimmy Kimmel Live!’ next week. The ‘Hold It Against Me’ hitmaker releases her seventh studio album ‘Femme Fatale’ on Tue... more info

Guardian Music — Number crunching the famous. This week Britney SpearsJohnny Dee more info

Chicago Tribune — It takes a village to keep Britney Spears doing what she does best: selling stuff. more info

Reuters — LOS ANGELES (Hollywood Reporter) - Britney Spears has confirmed she will perform a "surprise" concert in Las Vegas Friday night at the Palms Casino Resort Rain Nightclub, which will be filmed for an upcoming MTV special. more info

ContactMusic — Britney Spears will launch her live music comeback two days earlier than expected with a surprise show in Las Vegas on Friday night (25Mar11). The Toxic superstar previously announced plans to hit the stage for a free concert in... more info