'X Factor' change: Live episodes start Wednesday

With the World Series over, Fox’s The X Factor is going live ahead of schedule.

The singing competition series’ first live episode will be this Wednesday, instead of Thursday as originally planned. That means Wednesday will also mark the debut of new-hire co-hosts Khloé Kardashian and Mario Lopez, along with the debut of judge Britney Spears performing without the benefit of editing. On Thursday’s episode, the top finalists will be revealed.