Celebrity Parents Mandy Moore Nurses Baby Gus in 'This Is Us' Behind-the-Scenes Selfie: 'Back at Work' Mandy Moore brought her 6-month-old son Gus to set on Thursday, as she kicked off filming for the sixth and final season of This Is Us By Glenn Garner Glenn Garner Instagram Twitter Glenn Garner is a Writer/Reporter who works heavily with PEOPLE's Movies and TV verticals. Since graduating from Northern Arizona University with a dual major in journalism and photography, he got his professional start at OUT Magazine, The Advocate and Teen Vogue, and he's since consistently kept his finger on the pulse of the LGBTQ community. His first book The Guncle Guide was released in 2020 and was featured on Katie Couric's list of 100 recommended books of the year. People Editorial Guidelines Published on September 9, 2021 08:21 PM Share Tweet Pin Email Mandy Moore is back for one more season of This Is Us, and she brought her favorite little guy with her. The Golden Globe nominee, 37, nursed her 6-month-old son August "Gus" Harrison in a behind-the-scenes selfie she posted to her Instagram Story on Thursday, which was the first day back to set for the sixth and final season of the NBC series. "Back at work and grateful to have little man with me," Moore wrote with the photo. She shared more photos from set in May, as she nursed Gus while in full prosthetics as her character Rebecca Pearson. "Now I'm just feeding my child. I hope he's not gonna need therapy for this later," Moore said at the time. Moore has been open about her breastfeeding journey, which she's said has been "knock on wood, relatively easy." She even wrote about the experience on Instagram last month for National Breastfeeding Week. Mandy Moore / Instagram "Breastfeeding is not always smooth sailing (clogged ducts, timing life around feedings, pumping for when I'm at work, etc… ) but nursing this baby boy for the past nearly 6 months has been a beautiful, messy and an oh so rewarding experience I will treasure forever," she wrote. "It goes without saying that #fedisbest and I'm grateful to my body and the tremendous support I've had around me (especially in the beginning days and weeks when I had no clue what I was doing) for allowing me this time to nourish my sweet guy." The Silver Landings artist previously told PEOPLE that it was her This Is Us costar Milo Ventimiglia who taught her how to change a baby's diaper. RELATED VIDEO: This Is Us Creator on What's Next After Finale Wedding Twist, Kate's Second Wedding in Season 6 "It was funny, I remember very early on, definitely the first season, having to shoot scenes where we were chaotically changing diapers and just trying to handle triplets, and Milo having to show me how to swaddle, how to change a diaper," Moore recalled in July. "I knew nothing!" "Poor Gus, really Mom and Dad were starting from scratch with him," she added of husband Taylor Goldsmith, 36, with whom she tied the knot in November 2018 and welcomed Gus this February.