Ruben Studdard Joins 'The Biggest Loser': 10 Other 'Idol' Stars Who Got Into the Realty Game

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Ten years after Ruben Studdard picked up American Idol Season 2's win, the singer is poised for a reality TV comeback. But, this time, he's literally competing for his life — Studdard will star on Season 15 of The Biggest Loser. But he's hardly the only Idol alum to dip his toes into the reality waters — read on to see which other contestants transformed their reality show success into more reality shows.

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