Photo SpecialSpice Girls: Then and Now

GERI HALLIWELL (GINGER)

THEN: The flame-haired Halliwell shocked the world when she announced she was quitting the band on the eve of the Spice Girls' 1998 North American tour.

NOW: As a new mom (Bluebell Madonna was born in May 2006; Dad is screenwriter Sacha Gervasi), Halliwell, 34, signed a deal in April to write a series of six children's books, which features a character based on a bandmate – Princess Posh Vatoria.