Blake Shelton noticeably lost some weight after the divorce from Miranda Lambert, and his co-judge in "The Voice" revealed his "secret."

In an interview with E! News during the Harajuku Lovers fall 2015 collection, Gwen Stefani cracked a joke on how Blake Shelton lost the weight.

"You know, I have not seen him. All I've seen him do is this," she said, raising her hand in a cupping motion in reference to Blake Shelton's love of alcohol.

Blake Shelton and Gwen Stefani were the subject of a nasty rumor that they hooked up after his divorce from Miranda Lambert and her divorce from Gavin Rossdale.

According to Life& Style magazine, Miranda Lambert was "really upset" upon hearing about the rumors on Blake Shelton dating Gwen Stefani, his fellow judge on "The Voice."

"Before Blake hooked up with Gwen, Miranda and Gwen were friendly," the source alleged. "But her new relationship with Blake will definitely ruin any chance of them ever being close again."

Meanwhile, Blake Shelton really revealed his secret to weight loss during an interview on America's Morning Show on Wednesday hosted by Blair Garner.

The host asked Miranda Lambert's ex on how he's been shedding off the pounds since July, to which Blake Shelton quipped, "Well, you know, you should try the divorce diet."

"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," Blake Shelton added. "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."

In July, Blake Shelton and Miranda Lambert announced that they are divorcing by issuing a statement which read, "This is not the future we envisioned. And it is with heavy hearts that we move forward separately. We are real people, with real lives, with real families, friends and colleagues. Therefore, we kindly ask for privacy and compassion concerning this very personal matter."