Mandy Moore & Chrissy Metz Film 'This Is Us' in L.A.

Mandy Moore is hard at work on the new season of This Is Us!

The 35-year-old actress dressed as the older version of her character Rebecca as she spent the afternoon filming a scene outside on Wednesday afternoon (August 14) in Los Angeles.

PHOTOS: Check out the latest pics of Mandy Moore

Joining Mandy on set was Chrissy Metz who filmed a few scenes with a cute little baby!

If you forgot, Chrissy‘s character Kate gave birth to son Jack at the end of season three.

The night before, the cast of This Is Us stepped out for the NBC and Universal Mixer!

Season four of This Is Us premieres on Tuesday, September 24th at 9pm ET on NBC.