The Gimme More singer, 26, is poised to get a lot more with a mega-bucks one-off Las Vegas show, followed by a string of dates.
A success could see the Princess of Pop put behind her a disastrous year that included losing her two sons to ex Kevin Federline.
Video:Britney Spears - Gimme More (Live At MTV VMAs 2007) - Las Vegas
The source of News of the World confirmed: "The concert will be one to top them all—a spectacle.
"It will have jaw-dropping lights, amazing costumes and a performance from Britney to roll back the years."
Britney will play the gig at Palms Hotel And Casino in Las Vegas at the end of the year. Her record company, Sony BMG, have given the thumbs-up despite Britney's shambolic comeback at the MTV Video Music Awards last year.
The source added: "There's a total of £5million on offer but the onus is on Brit to put in a top show.
Video: Britney Spears(布兰妮) - I Love Rock N Roll
"Britney is finally getting her life—and career —back on track and the whole world will see the evidence when she steps on that stage."