The host delivered a tearful tribute to his late mom before Swift performed a live debut of her new single 'New Year's Day.'
The 'Tonight Show' host had canceled Friday's show after a family emergency.
A source tells ET that the late night host's mother is sick and in the hospital.
He didn’t think they were going to be ‘forever.’
The two pals had a lot of fun on Monday night’s ‘Tonight Show.’
She visited ‘The Tonight Show’ on Wednesday.
The audience goes wild for the surprise performance as Miranda riffs with house band The Roots!
The 'Tonight Show' host opens up to ET about what home life looks like for him with two young daughters.
The 'Tonight Show' host also dishes on his daughters' personalities.
The 'Malibu' singer came to win!
The 'La La Land' star stopped by 'The Ellen DeGeneres Show' on Friday and opened up about his four-legged friend.
ET has a rundown from the 'Younger Now' artist's musical guest run on the late-night talk show.
The 'Wonder Woman' star guessed a clue in three seconds.
Watching the TV host and the singer adorably surprise fans is one of the most delightful things you'll see all day.
