Carrie Underwood put her best foot forward -- literally! -- for her new Blown Away album cover.

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The 28-year-old "Good Girl" singer shows off her toned, tanned legs in a high-slit ombre gown and platform heels. How did Underwood, married to NHL player Mike Fisher, get in such great shape?

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"The eating is key, and she does it well," Tony Greco, one of Underwood's trainers, told Us Weekly in 2011 of the vegetarian size-2 star. "When she's touring, she gets stuff at the local fresh store rather than eat stuff off the bus."

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To maintain her flawless figure, Underwood tones with balance boards and resistance bands, and at least three times a week, she hits the gym for circuit training with weights ranging from 5 to 30 pounds. That, along with outdoor runs to vary the workouts, "keeps her pretty much in tip-top shape," said Greco.

Underwood's new album, Blown Away, is available May 1.

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