Fellow coach Gwen Stefani recently weighed in on her co-star's slimdown.
"You know, I have not seen him. All I've seen him do is this," the 45-year-old singer told E! News, smiling and lifting her arm up in a cupping "raise your glass" motion."
Stefani made her comments this week at a presentation for her Harajuku Lovers fall 2015 collection.
Shelton and Lambert, 31, announced in July they were divorcing after four years of marriage. They have no children together. Stefani filed for divorce from Gavin Rossdale weeks later, following 13 years of marriage. The two share three sons—Kingston, 9, Zuma, 7, and Apollo, 1.
Earlier this week, following speculation about his weight loss, Shelton's rep told E! News, "He's doing the two things he hates to do—diet and exercise." Shelton had joked in a recent radio interview that he's been on a "divorce diet."
He appeared slimmer than ever and was in a jovial mood while performing a free concert in Nashville in Wednesday.
This is like a party. This is like a real party. Not a stiff music industry event. It's a full on country music party," Shelton told the crowd, joking, "I gotta start drinking more."
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