Kellie Pickler has already eliminated meat from her diet, but now the newly-engaged singer says a recent glimpse of herself on the television screen is motivating her to cut a few more things out of her daily intake as she gets ready for her upcoming wedding to songwriter Kyle Jacobs.

"I was looking back at the CMT Awards. My grandpa was in there on the couch, and I guess they were re-airing it on CMT," Kellie recalls to OK! magazine. "He had it on, and I went, 'Oh sh--, I have got to step away from the beer. The beer and the fries -- I've gotta quit.' You'll see pictures of yourself, or you'll put your clothes on, and you'll be like, 'Oh, my pants are too tight, I can't breathe.' You notice it. I've gotta start cutting back. That's one reason I'm running on coffee today."

The former 'American Idol' contestant, who admits she has packed on the pounds in the last year, says she knows exactly how it happened. "My thing is I'm such a night owl that I'll go through the day without eating much -- hardly at all -- and then at night, I'll cram everything in and then go to bed," she explains. "That's why I've gained probably 12 pounds this year."

She may limit her calories as she preps for her walk down the aisle, but don't expect the North Carolina native to add a fitness regime to her schedule. "I really don't workout," she admits. "I'm not an avid gym person. I mean, you can tell. I go through stages -- like I'll be good for a short time, and then I let myself go. Then, I try and pick up where I left off and get back in the gym. It's just a lose-lose situation for me."

Now, while performing opening act duties for Rascal Flatts on their Nothing Like This tour, she acknowledges that with only a few days off, a healthy lifestyle may be impossible for awhile. "You come in off the road, and the last thing you want to do is go to the gym -- or go sweat. You want to sleep in your bed, relax and unwind. And cook. Have something that's not road food. It does get hard on the road because you're so much all over the place. You eat what's there. It is what it is."

With no word yet on an official wedding date, Kellie and Kyle already have a new addition to their family -- a new Weimaraner puppy named Tucker. Planning on recording a new album this fall, Kellie's current single, 'Makin' Me Fall In Love Again,' is steadily climbing the charts. See the video here.

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