Tuesday marked the season Finale of This Is Us, and the cast celebrated the only way they know how: as a family. Mandy Moore and Milo Ventimiglia showed up to the LA screening dressed to the nines, while Chrissy Metz was all smiles on the red carpet. Justin Hartley attended without fiancée Chrishell Stause, and Susan Kelechi Watson kept things sexy in a sheer top. Missing from the fun was Sterling K. Brown, though he did share photos from the episode on Twitter, writing, "Tonight's finale of #ThisIsUs will most likely require tissues, but that's okay because @trialanderror premieres right after and it's 😂😂😂." We're definitely going to miss them, but thankfully, they'll be back in the Fall.