-It's so pretty.

And also, remember earlier when we sang with Darlene Love?!

-I mean -- -Oh, my God!

-How fun was that? -That was the best.

I can tell -- like, I was watching backstage,

and I was like, "I can tell that I've got that,

like, crazy nervous energy,

where I'm so excited, but I'm so nervous."

And I just need bubble wrap to be like, "Oh!"

[ Laughter ] -Yeah.

-Ugh. -I love --

-Get out some of that aggression.

[ Laughter ] -I love that you were also in --

you were in beautiful track pants, by the way, for that.

-Well, okay. There was a fire at my hotel.

I'm not kidding. There was a fire.

My hotel caught on fire. -Yeah.

-Not my room, although I am that bitch.

So if you thought that, that's fine.

[ Laughter ]

'Cause that would -- that tracks.

-No, okay, yeah, yeah, yeah. -But I was in --

I was in my room.

I was like -- I'm on the 11th floor,

and I smelled smoke.

And then the fire alarm went off.

So I was like, "Well, normally, I would ignore this,

but I also smell smoke."

So I, like -- [ Laughter ]

-You're like, "Someone, fix this problem, this noise problem."

Yeah. [ Laughter ]

-And I didn't want to be that guy that, like,

grabs all the stuff and then dies,

'cause then -- then you're a jerk.

-Yeah. [ Laughter ]

-And you're dead. -Yeah.

-So I just grabbed, like, my backpack,

and I had a beanie on, and I went downstairs.

And I was, like, going down the stairs like,

"There's a real fire. This is a real emergency.

I'm being responsible." And -- [ Laughter ]

-And you're saying this all as you're going down the stairs?

-Uh-huh. -That's very good -- helpful.

-And then, like, the roads were blocked.

There were, like, fire trucks. -Yeah.

-There were like 30 firemen. -And everyone's okay.

-And everyone's fine and -- every --

you know, it's all fine.

But we couldn't get through, so I -- I was like,

"Well, I guess I'm just gonna walk to 'Fallon.'"

So just -- wear my beanie and --

-That's right -- you can always come here.

-I was like, "I'll just walk to the building."

-Everyone's welcome here. [ Cheers and applause ]

You're allowed to just come here,

and we'll take care of you.

We'll take care of you and Darlene.

I'm so happy. I know you're great.

Let's talk about the -- the -- the Christmas spirit here

and get into some --

what is your favorite Christmas holiday song?

-Oh, I'm a big fan of "Good King Wenceslas."

You guys big fans?

Big fans of "Good King Wenceslas."

[ Cheers and applause ] -How does that go? Yeah.

-But, you know, well, but my favorite thing about it

is it's one of those songs where everybody knows, like...

♪♪ Brightly shone the moon that night and... ♪♪

♪♪ [Mumbling] something ♪♪

-And it's got like 15 verses. -Oh, yeah, I know that song.

[ Both harmonizing ]

-♪♪ Deep and crisp and even ♪♪ -♪♪ Wenceslas ♪♪

And -- -Yeah.

-And, like, by the fifth verse, you're like,

"This is what it's about?" -Oh, really?

-It's like one of those kind of things.

-Oh, really? -Where you're like,

"He's an alien? Twist!" -That's not true.

[ Laughter ] -No. Yeah.

-I was thinking about Googling it.

And now I'm definitely going to. [ Laughter ]

I got to say, I love your acting.

I mean, I've known you for a long time.

But I don't know if I knew how great of a singer you are.

You're really unbelievable.

-Oh, that's so nice of you to say.

-The "Trolls" soundtrack, by the way --

the "Trolls" soundtrack -- it plays nonstop in my house.

[ Cheers and applause ] You are fantastic.

-Oh, thank you.

-You and Justin are great together.

-Thanks! -But your solo stuff is great.

-Is that for your kids or just for you? Just for you.

-No, I'm just a big fan of "Trolls."

[ Laughter ] I love any DreamWorks Animation.

I love those guys. But I -- no, I was --

I just listen to you over and over again.

Now, "Pitch Perfect 3" is coming out,

so now I kind of know that you sing.

But I'm thinking about when you first auditioned.

When did we all know? I mean, you've seen the movies.

-No, I -- when I -- for the first "Pitch Perfect" movie,

they needed to make sure everybody could sing,

so I sang "Cups," actually.

The -- I had seen it, like, in a, you know, a YouTube video,

the little rhythm thing.

And so I just learned it for fun 'cause I'm a dork.

And -- [ Laughter ]

-You taught yourself "Cups." -Yeah, just for fun.

And -- And then they were like,

"Oh, can you sing something for us?"

And I was like, "I get to do my thing."

[ Laughter ]

Like, I had no use for it before.

And then they wanted to put it in the movie.

And I was like, "Okay."

Like, so they put it in the audition scene,

which was originally supposed to be "I'm a Little Teacup."

-What? -I know. I know.

I don't know how I was supposed to play that,

so thank God they changed that. -Wow!

-I know. I would have been like,

"I don't know how to make this scene work, guys."

-Yeah, exactly, yeah.

-And then they were like,

"Yeah, we want to shoot a music video of it."

And I was like, "Of that?

I mean, if you want to waste your money, be my guest."

[ Laughter ]

And then -- And now it's a whole thing!

-"Cups" went -- went, like -- it was on --

it was like the top 10. -It, like, charted. What? What?!

-Yeah, in the Billboard Top 10 songs, your song.

It went, like, three -- triple times platinum.

-And, like, triple platinum. What are we talking about?

-Yeah. You. -That's three!

-We're talking about you. No, this happened.

That's the best. Congratulations.

-Oh. [ Cheers and applause ]

-That's what it's all about. -So weird.

-I love that! I love that that's a story.

-That's a total accident. -That's fantastic.

-I know. It's funny. -Now, you do --

You're -- You're working in the movie with DJ Khaled.

-Yes.

-Now --

-Mm, indeed. -Yes, he's hilarious.

-Yes. -Is he a fan of the movies?

-I don't know. Because he showed up,

and he -- he sort of said,

"Oh, I don't do scripts, and I like to improv."

And we were like, "Okay."

And there's a line where I'm talking about the other girls,

and he was like, "They don't want you to win!

They want you broke! They want you dead!"

And I was like, "That's not what the movie's about.

That's not what the movie's about."

[ Laughter ] -That's how he improvises?

-No, no, no. Very supportive.

Very supportive cast members. Very supportive.

-They want you broke and dead? -Yes. Yes.

-No, that's not -- they're very supportive cast members.

-I know.

-"No one wants me broke and dead."

-And I was like, "No, no, no.

They're really supportive of Beca and her dreams, so..."

[ Laughter ]

-Not only can you act and sing and do many things,

but you, also, one secret is that that you do an impression

that -- I know -- -No, I do.

I do one impression, and it's the weirdest impression, too.

-I know, but I love weird impressions.

-Like, I should have, like, a Christopher Walken or something,

and I have a Kristen Stewart.

I don't know -- I don't know why.

-You do an impression of Kristen Stewart,

who we also love. -Yeah, I do it -- I love her.

And I've done it to her. I did it to her,

and she was like, "Oh, man, I-I do that with my mouth."

And I was like, "You're doing it now. I know!"

[ Laughter ]

-So that -- Can you do maybe Kristen Stewart, like,

explaining what "Pitch Perfect 3" is about?

[ Laughter ]

-[ As Kristen Stewart ] Um, you know,

there's like --

the Bellas are out of college, and, um...

[ Laughter ] You know, they go on a USO Tour,

and there's like -- you know, hilarity ensues, so...

[ Laughter ]

-Oh, my gosh, that was... [ Cheers and applause ]