The actresses couldn't be more excited to work together!
ET exclusively spoke with Munn at the #GirlHero Awards Luncheon, which marked the first Girl Up event in Los Angeles.
Here's a look at what you can expect from Tuesday's episode of the hit NBC show.
Showrunners Isaac Aptaker and Elizabeth Berger, along with Sterling K. Brown, Chrissy Metz and Chris Sullivan dish on the new clue.
ET takes a look at how the stars of 'This Is Us' got cast, and where they were at the time.
'This Is Us' season three premieres Tuesday night on NBC.
The Pearson family is set to earn a whole lot more for the upcoming 18-episode season.
ET caught up with the 'This Is Us' star at the 70th Primetime Emmy Awards, and she dished on her green gown.
The 'This Is Us'star invited only ET to her hotel in downtown Los Angeles, where we watched her get all glammed up and gorgeous
ET takes you inside the 'This Is Us' star's hotel room before she steps out for the 70th Primetime Emmy Awards red carpet.
The 'This Is Us' star exclusively invited ET to her hotel in Los Angeles on Monday, just hours before she walks the red carpet.
ET is here to help you throw an Emmy viewing party fit for the stars.
Only ET visited the Emmy-nominated makeup and wardrobe departments of 'This Is Us' to bring you these exclusive time-hopping details.
Co-star Chris Sullivan also filled ET in on an upcoming episode featuring nine outfit changes!
