Mario Lopez and Khloe Kardashian Odom are officially joining "The X Factor."

Khloe Kardashian and Mario Lopez (Getty Images)

The "Extra" host and the "Keeping Up with Kardashians" co-star will host the second season of the Fox talent competition. The network said Tuesday that Lopez and Odom will first appear as hosts during the show's live broadcasts beginning in November.

"X Factor" judge and executive producer Simon Cowell called Tuesday's announcement "the worst kept secret in Hollywood."

British television personality Steve Jones served as the show's host for the first season.

The addition of Lopez and Kardashian is the latest shift for the underperforming singing content. Britney Spears and Demi Lovato joined Cowell and L.A. Reid on the "X Factor" judging panel for the second season. The pair replaced Paula Abdul and Nicole Scherzinger.

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