Britney Spears is planning to release a new album in June. For her next material, the now-again blonde singer is working with big producers such as The Outsyders' K. Briscoe (who penned "Womanizer") and Corte Ellis from Soul Diggaz and hitmaker David Guetta. Danja, Max Martin, Darkchild and Sean Garrett are also working on the album. Meanwhile, Britney made a place on the Top Money Maker list, with earnings estimated in $39 million for last year (09). U2 reached top spot with a fortune of $108 million, followed by Bruce Sprigtenn with $58 million and Madonna on the third place with $47 million.