Miranda Lambert made no secret of the fact that she was working on slimming down for her wedding to Blake Shelton last year. And while the nuptials happened more than seven months ago, the 'Baggage Claim' singer says she's still trying to stay in top physical shape -- which is challenging considering she spends most of her time on the road. Miranda acknowledges her schedule requires her to be diligent in her food choices when she's away from home.

"We eat a lot of fast food when we're traveling," the Texas native explains to Shape magazine. "But these days, almost every restaurant has an alternative to that cheeseburger. I just have to remember to order it!"

Although she tries to stay away from the fattening foods, Miranda refuses to become ritualistic in her eating choices. "My weight always fluctuates by 10 pounds," admits the blond beauty. "After trying Atkins and doing Nutrisystem a few times, now I'm just focused on maintaining a healthy lifestyle rather than dieting."

Healthy eating aside, the reigning CMA Female Vocalist of the Year also finds time to get her exercise in, whether at home or on the road.

"When I'm touring, I have to think of workouts that don't require a gym," she explains . "My favorite is running up and down the stairs at the arena, which is good cardio and great for my lower body."

She may be focused on toning her body, but there's one part of her frame she's happy to leave the way it is. "I don't mind having a big butt -- they're back in style. But I do a lot of squats to make sure my booty's not dragging on the ground," she reveals. "I listen to Beyoncé's 'Run the World (Girls)' when I exercise. I picture her body and it makes me push harder."

Miranda recently celebrated her latest album, 'Four the Record,' earning gold certification after just two months since its release. She will kick off her On Fire tour on Thursday, Jan. 12, in Rockford, Ill., with Chris Young and Jerrod Niemann serving as opening acts. Keep track of Miranda's concert schedule here

Watch Miranda's 'Baggage Claim' Video
if(typeof AOLVP_cfg==='undefined')AOLVP_cfg=[];AOLVP_cfg.push({id:'AOLVP_1099700089001','codever':0.1,'autoload':false,'autoplay':false,'displaymnads':true,'playerid':'89761511001','videoid':'1099700089001','width':476,'height':357,'playertype':'inline','stillurl':'dynamic','videolink':'#','videotitle':'dynamic','videodesc':''});

More From TheBoot