Cheryl Burke Praises Rob Kardashian for Hard Work, Weight Loss

, a professional dancer who’s also been moonlighting as a blogger for People, recently had some very nice things to say about Rob Kardashian – her current partner for the 13th season of ABC’s Dancing with the Stars.

In a post published yesterday on People’s website , Burke praised the 25-year-old Keeping Up with the Kardashians star for giving it his all during the competition, an effort that Cheryl says has resulted in a noticeable amount of weight loss.

“He’s lost a lot of weight,” Burke said. “His whole physical appearance has changed. He’s using different muscles. He’s super sore all the time. I’m not sure if he’s changing his diet, but the cardio is really good. I think he lost most of the weight just rehearsing from the jive because it’s so fast-paced.”

Burke says that he’s taken note of his changing physique, too — and that’s manifested in a little bit of vanity! Where Rob previously made it clear that he wasn’t happy with his figure, even joking during a rehearsal that his “man boobs were jiggling,” he now is much more confident with his body, and his choice of attire is proof.

“I can tell Rob is getting more comfortable with his body because he’s starting to wear tank tops to rehearsals. And you’ll see his arms out. In the beginning, you’d never see that. He looks at himself in the mirror. It’s really cute,” Burke said.

To see if Cheryl and Rob will live to dance another day, tune into tonight’s episode of Dancing with the Stars at 8pm EST.