What a week -- first, the Verve announce they're reuniting for a new album and tour, and now, notorious "Girl Power" popsters the Spice Girls have done the same. At a news conference in London today, the quintet announced they're kicking off a world tour in Los Angeles on December 7th (a date which will especially live in infamy), which will be preceded by a greatest hits album in November. "A girl is allowed to change her mind," Sporty Spice said. "All of us have had our fears and doubts, but we feel that the time is right and we will have some fun and be together." Guess they're trying to show the, uhh, Pipettes how it's done?