'This Is Us' Cast Kick Off Filming for Season 2, Reveal Possible Spoiler -- See the Cute Pics!

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Sterling K. Brown, Mandy Moore and Milo Ventimiglia were all smiles on Tuesday.

The Pearson family is back at it!

The cast of This Is Us returned to work on the Paramount lot in Los Angeles on Tuesday, and they couldn't help but snap their first day on season two for posterity.

Sterling K. Brown shared a sweet photo on set with his TV parents, Mandy Moore and Milo Ventimiglia, and the trio were all smiles for the cute selfie.

"BACK TO WORK, BABY!!!!!!!!" Brown captioned the pic.

RELATED: Mandy Moore Shares Sweet Birthday Message to 'TV Husband' Milo Ventimiglia

Moore also shared the snap on her Instagram, where she excitedly gushed about reuniting with her co-stars. "Totally stole @sterlingkb1's pic because we're BACK in business, guys. Day 1 of Season 2," she wrote in the caption, adding "? this crew!" Moore also tweeted: "The best. ? my Pearson fam-- @sterlingkb1 and @MiloVentimiglia."

The 33-year-old actress chronicled her first day returning to work with several Instagram stories, sharing a pic of the early-morning sun on the Paramount lot, a crew member wearing a cap with the word "cry" ("Is that our mandate this year?") and her in the hair and makeup chair.

RELATED: Mandy Moore Is 'Trying Not to Freak Out' on 'This Is Us' Set

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Instagram

And Moore may have shared a potential season two spoiler when she posted this hat with a logo for the Pittsburgh-based "Big Three Homes" emblazoned on it. Could this be confirmation that Jack starts his own construction company?

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Creator Dan Fogelman shared a behind-the-scenes photo of one of the first scenes of season two, featuring Moore and Ventimiglia. "We're back baby," he wrote alongside the pic.

On Monday night, Moore adorably admitted in an Instagram video that she was "excited and nervous" for the "first day of school," while studying her script for the first episode.

Looks like This Is Us fans are in for a real treat when it returns this September on NBC!

RELATED: Chrissy Metz Shines in Red Dress, Poses With Boyfriend Josh Stancil

Last week, Moore documented some prep work she was doing ahead of filming for the new season, which included getting a face mold to play the older version of her character, Rebecca.

For more, watch the video below.