Miranda Lambert cleaned up the 2011 ACMs, winning four awards, including her second consecutive Female Vocalist of the Year honor. And now that the awards show is over, she can concentrate on one thing: marrying her 'Honey Bee' Blake Shelton on May 14. Lambert knows time is ticking away, and she jokingly tells PEOPLE, "It's about to be crash time!" as she's been working hard to get to the weight she wants to be on her wedding day.

But if she doesn't get to her ideal weight, it doesn't really matter to her husband-to-be. "I've been working all year trying to do it healthfully and slowly, but you know what, he's loved me at all weights," Lambert says, "so if I gain 30 pounds before then -- I don't want to! -- but he'll still marry me."

Shelton chimes in, "She looks amazing! She set a goal for herself, worked hard and I am so proud of her." The bonus of all of her hard work -- and something that makes Lambert very excited -- is that "I had to have all my clothes taken in."

Lambert has taken the entire month of May off to get ready for her nuptials. "I'm really excited about the wedding," she gushes. "It's kind of like when you're little and you know you're going to Six Flags in a month and you're like, I'm ready to go now."