Blake Shelton joked about his "divorce diet" following his split from Miranda Lambert on Wednesday, Sept. 23 Credit: David Becker/Getty Images

Blake Shelton has slimmed down since splitting from Miranda Lambert — and he knows exactly why. The Voice mentor revealed on Wednesday, Sept. 23, that he didn't have much of an appetite while handling the divorce.

"Well, you know, you should try the divorce diet," Shelton, 39, told host Blair Garner on America's Morning Show on Wednesday, Sept. 23.

"The whole stress of getting through all of that is just...It was just weird. I'm not eating as many fried pickles and stuff. I'm doing great. I am," he continued. "It's just...I wasn't, like, going to the gym. Just stay as busy as you can to kind of keep your mind off of everything."

Shelton and Lambert, 31, amicably ended their four-year marriage back in July. Hours after the split news broke, TMZ confirmed that the divorce had already been finalized.

"In Oklahoma, it happens so fast. Like, Miranda and I didn't have any kids, and we had a prenuptial agreement, whatever we had. Once we filed for divorce, it was over in, like, I think it was like a nine or 10-day waiting period until it's over," Shelton told the Bobby Bones Show on Wednesday.

In July, Lambert also opened up about the breakup during a show at the 3rd and Lindsley Bar and Grill in Nashville, Tenn. "Well, I've been living off of caffeine and sad songs lately," she told the crowd. "So, we're gonna drink some caffeine and sing sad songs."

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