She then referred to Alison as a "babe' and the fun exchange ended".
Metz also told People that she's "so distraught and upset" by the alleged rude comment.
Metz has since vehemently denied she called Brie a b**ch.
"It's terribly unfortunate anyone would think much less run a story that was completely fabricated!"
Kim Jong-un goes to China for 4th meeting with Xi
North's Korean Central News Agency said Mr Kim departed on Monday afternoon with his wife Ri Sol Ju and other top officials. Secretary of State Mike Pompeo said, "The Chinese have been very clear to us that these are separate issues".
According to Metz, Gibson had asked her whether she knew Alison Brie at the end of their interview, to which Metz responded, "Do I?" "If she did happen to use the "other" word, I promise it was 1,000 percent a joke".
Metz added that Brie is "somebody that I really revere" and shared that she and Brie had "already texted about" the gossip. The red carpet show's co-host, AJ Gibson, defended Metz in a statement to People, saying that the This Is Us actress said "babe", not "bitch".
Nicole Sperling, a reporter from Vanity Fair, even took a moment to ask Brie about the situation, of which she seemed to have little knowledge. "When I was walking up they said, 'Do you know Alison, ' and I said, 'Oh boy, do I.' I love her".
"I don't speak about anyone like that I don't speak like that. 'I know her. I saw her on the carpet and I told her how attractive she looked, '" wrote Sperling about Brie's response. "Alison and I obviously are friends. Rumors can't keep us down!"
Brie later posted on her Instagram account a picture of the two actresses together and said, "Nothing but love for @ChrissyMetz". Cheers to Metz and Brie, you're an inspiration! "I would never say anything like that about anyone".