Jimmy Fallon paid tribute to his mom on Monday's show and there couldn't have been a dry eye in the studio.
Fallon then shared a handsome memory of going grocery shopping with his mother, and a special "I Love You" signal they shared right up until the very end of her life.
He added, "Whatever you think of Taylor, she did something handsome for Jimmy and our show today, and we're forever grateful".
Fallon producer Mike DiCenzo Tweeted about it, saying, "First, a quick word about Taylor Swift".
"She also stole everything!" said Daly with a laugh.
In the video below, you can see what Jimmy had to say about his mother in the wake of her passing - including a story about how he and his mother would communicate the love that they had for each other.
She was 68 years old.
One of the things that we do want to point out is some of the love that we've heard about towards Jimmy from some of the Tonight Show staff over the past day or two.
Swift showed up to play her reflective new ballad, "New Year's Day", which includes the lyric, "squeeze my hand three times in the back of a taxi". Tears. I think everyone in the audience started sobbing.
Taylor sat down at the piano to sing the heartfelt song and was accompanied by just an acoustic guitar and some backup singers.
Taylor Swift appeared on Jimmy Fallon's show with a new song from "Reputation".
He went on to thank fans for all the support he and his family had received since his mother's death. "Whatever you think of Taylor, she did something attractive for Jimmy and our show today, and we're forever grateful".