You go, Brad Pitt!

The A-list actor looked noticeably slimmer during his surprise Golden Globes appearance on Sunday, Jan. 8 amid his highly-publicized divorce from Angelina Jolie.

When the 53-year-old Allied actor hit the stage during the special award show, he was welcomed with a loud round of applause from the audience. Soon after, fans took to social media to comment on his apparent weight loss.

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Brad showing off his weight loss in January 2017.

“He lost a bunch of weight,” a source close to Brad told Us Weekly. “He’s focusing on himself again, watching what he eats and has a chef making him healthy meals.”

And that's not all! “He’s exercising,” the source continued. “He’s been outdoors a lot, hiking and walking. He’s had a lot of time to focus on himself.”

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“He does a lot of weight training. He’s dedicated to clean living and eating right," another insider added.

Brad and Angelina, 41, first became an item in 2004 after meeting on the set of their action-comedy film, Mr. & Mrs. Smith. Brad was married to Friends star Jennifer Aniston at the time. The actor and Angelina became engaged in April 2012 after eight years of dating and tied the knot in August 2014 at Château Miraval, France.

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Brad and Angelina prior to their breakup.

The former couple are parents to six children togetherMaddox, 15, Pax, 13, Zahara, 12, Shiloh, 10, and twins Knox and Vivienne, both 8. The pair announced their separation in September 2016.

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"I am very saddened by this, but what matters most now is the well-being of our kids," Brad said in a statement at the time. "I kindly ask the press to give them the space they deserve during this challenging time."

Angelina cited irreconcilable differences as the reason for their separation after just two years of marriage. At the time of the unfortunate news, the actress released a statement through her manager. "Angelina will always do what's in the best interest to protect her children," Geyer Kosinski said. "She appreciates everyone's understanding of their need for privacy at this time."

Click through the gallery below to Brad Pitt and Angelina Jolie’s cutest moments!