On the hit NBC show This Is Us, the character of Toby may be struggling with weight loss, which — SPOILER ALERT — contributed to his heart attack during the mid-season finale. But actor Chris Sullivan has been on his own weight loss journey in real life, and his slim physique was showcased on the red carpet at the Golden Globe Awards earlier this year.

Although it’s not confirmed that the 36-year-old wears padding to appear bigger on the series, there’s no denying that he’s been showing off a much thinner figure in recent months. And while Chris’ weight has fluctuated over the course of his career, he’s never sported as large of a belly as Toby — at least from what we can tell!

chris sullivan getty images

Chris’ on-screen love interest Chrissy Metz recently made headlines for saying that she would be losing weight alongside her character Kate, telling People magazine, “It’s definitely a conversation that we’ve had, and it’s in my contract.” She later clarified, “It wasn’t mandated in the contract, and I probably — if I ever said the word contract, I didn’t mean it in that way. I was pitched that the trajectory of Kate is that she’s going to lose weight. That is who and what’s going on.”

As for the dynamic between Toby and Kate, who are both on a similar journey, Chrissy told The Hollywood Reporter, “I’ve been in relationships where the man loses weight super fast and you’re like, ‘But you didn’t even want to lose weight!’ There is that dynamic shift when there’s this understanding and jealousy even — not intentional — but just the way that we’re made and that definitely affected Kate and Toby’s relationship.”

She added, “[Chris is] so open and hilarious and charming. What you see on the screen has only been cultivated since we met each other… He said, ‘I’m on your team and we’re in this together and partners.’”

Scroll through the gallery below to see how the entire cast of This Is Us has changed since their first red carpet!