Metcalf spoke to "Good Morning America" immediately after her first-ever Oscar nomination for best supporting actress in "Lady Bird."
"As I was told, I got really emotional, you know, because everybody just poured their whole heart and soul into doing this film and I'm so happy for Greta [Gerwig] and Saoirse [Ronan] and the whole movie," she said.
"Lady Bird" received five nominations, including best picture and best director.
"Mudbound" director of photography Rachel Morrison became the first woman nominated for best cinematography by the Academy.
"I could not be more excited. It’s a dream come true," Janney said earlier today on "GMA." "I was awoken by five friends of mine who flew in from New York to be here for the announcement. I’ve never been more surprised by them or what’s happened this morning. I’m so grateful.
"It feels too good to be true, especially because my friend Steven [Rogers] wrote this role for me because, and he always said, 'I wrote this role for you so you’d win an Oscar,'" she said. "I’m just so happy and so thankful to him and for this honor. It’s truly a really special morning for me," she added.
"The Post" leading lady and best actress nominee, Meryl Streep, said she is "proud of the film" and all it stands for.
"I am honored beyond measure by this nomination for a film I love, a film that stands in defense of press freedom, and inclusion of women’s voices in the movement of history," Streep said in a statement to ABC News.
"My heart is bursting with pure elation for the cast and crew of ‘The Shape Of Water.’ Guillermo [del Toro] has given us all a dream job and to be recognized by the Academy is so deeply moving," Spencer said in a statement to ABC News. "I am jumping for joy from Park City for all of the nominees this morning! Congratulations everyone."
Jordan Peele tweeted a GIF of "Get Out" star and lead actor nominee Daniel Kaluuya immediately after the best picture announcement.
Peele later said he called Kaluuya and "failed" at hiding his emotions.