Kournikova confirmed as 'Biggest Loser' trainer

Host Alison Sweeney made it official last night on the live finale of NBC's "The Biggest Loser: Couples," introducing former tennis star and pinup girl Anna Kournikova as one of the show's new trainers next season. "This is an amazing and incredible opportunity for me," Kournikova, wearing a body-hugging, blue, creped minidress, said, vowing "to share all my knowledge and experience that I've gained being a professional athlete." She ended her brief appearance onstage by congratulating the finalists and welcoming them "to your new lives. Congratulations on everything you guys achieved."

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