Read on for a rundown of the episode’s most emotional moments.
Underwood recalled her experience interviewing for a spot on the show.
“They said, ‘Do you have time to meetJulie Chenand Sara Gilbert?’

Credit: CBS
I said, ‘The girl fromRoseanne?'”
she said, also praising Gilbert as a mother and a businesswoman.
“You are truly an example for others to follow.”
ButOsbourne’s goodbyewas especially emotional, moving Gilbert to tears as well.
“She’s like a sister that I’ve never had,” Osbourne said.
“I know if I tell her things, they won’t go anywhere else.
It’s like a sacred thing…It’s like not having your sister with you anymore.”
Lastly, Osbourne and Gilbert shared another particularly emotional exchange.
“This is not a goodbye.
Naturally, it was perhaps the sweetest moment of the entire hour.