(Cover) - EN Showbiz - Britney Spears is reportedly planning a big comeback show in Las Vegas this Friday.The 29-year-old US pop star became a global success back in 1998 when she shot to fame with debut single ...Baby One More Time, and went on to enjoy success with a string of hit albums including Oops!... I Did It Again, In the Zone, and Blackout. Her last album Circus was a smash in 2008, and the star is now back with a fresh new sound with the record Femme Fatale set for release this Friday.To coincide with Britneys eagerly-anticipated return to pop, it has been revealed the star will be performing this Friday in Las Vegas for a special MTV event, and it is thought the star will be going to great lengths to ensure the show is a success. It will take place at The Palms Casino Resort in Las Vegas, and according to Radar tickets to the event will be free of charge. MTV is planning this as part of her big comeback, and they will be shooting her behind the scenes and airing a special before the end of April, a source added.According to reports, a special behind the scenes show will also be shot and later aired on MTV, so Britney fans who dont get to attend the show can chart her concert comeback regardless. (C) Cover Media