AceShowbiz - "This Is Us" stars flocked Hollywood's Paramount Theatre in Los Angeles on Tuesday night, September 25 to attend its season 3 premiere. Among those who graced the red carpet at the event were Mandy Moore, Milo Ventimiglia, Sterling K. Brown and Justin Hartley.

The 34-year-old actress looked stunning in a red and black gown from Azzedine Alaia. She styled her raven locks in an up do by hairstylist Ashley Streicher that added ellegance to her. The brunette kept her look minimal with only a few rings and stud earrings. Meanwhile, Milo simply donned a black T-shirt and jeans.

"Black Panther" actor Sterling opted for Theory suit and shirt, which he paired with Rob McAllen shoes. Justin, meanwhile, looked stylish in a checkered blazer over a maroon turtleneck. He completed her look with a pair of gray pants and black shoes.

Susan Kelechi Watson, Chrissy Metz and her on-screen husband Chris Sullivan were also among the attendees. Chrissy turned heads in a patterned Eloquii peplum gown and black Stuart Weitzman stilettos.

"The wait is over," the Fossil brand ambassador gushed. "And we are so excited to bring you the start of season 3 TONIGHT!" Season 3 of "This Is Us" premiered that night, featuring more twists, adding more mysteries that are barely solved on the NBC family drama.

A slew of young cast members of the SAG Award-winning drama also attended the premiere. Among them were Lonnie Chavis, Hannah Zeile, Logan Shroyer and Eris Baker.