Hilary Duff and Mandy Moore's friendship is what dreams are made of. While occasionally crossing paths as teenagers in Hollywood, Duff and Moore became especially close after they welcomed babies in 2021. "Hilary is a close friend, and she has a daughter who is six weeks younger than Gus," the This Is Us alum said on a February 2022 episode of The Kelly Clarkson Show. "She's, like, [a] super-mom - she has three kids - but she decided to start hosting this music class at her house." She continued, "It's so much fun.