Miranda Lambert Wows at CMA Awards With Slimmer Figure

His album is titled "Based on a True Story …" and it couldn't be more fitting after the evening Blake Shelton and wife Miranda Lambert had at the CMA awards Wednesday night in Nashville, Tenn.

Shelton, 37, took home Album of the Year and Male Vocalist of the Year, while Lambert, 29, won her fourth straight Female Vocalist of the Year award.

But Lambert made the most headlines before the show.

See the Complete List of CMA Award Winners

Wearing a sleek blue dress with a plunging neckline, Lambert stunned everyone on the carpet and at the show with her toned body.

"I just felt that I should get a little more healthy … I have this spot, I found a great spot in country music and I want to keep it," she told reporters backstage of the weight loss.

She explained that heading into her 30th birthday Sunday, she felt "like I needed to get ahead of the game."

"Everybody always says, 'Well, it goes downhill from there.' I just thought, maybe if I get ahead of it a little, I can kind of not have to work so hard later in life," she added.

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So what's her secret?

"I didn't give up really a lot, really," she said. "Just Cheetos mostly!

"I didn't give up drinking. I refused. Have you met my husband? You have to drink to put up with that," she joked. "Just kidding."

(Photo Credit: Stephen Lovekin/Getty Images | Evan Agostini/AP Photo)