After he posted six-second videos of himself

performing songs on the popular app, Vine.

Three million followers later

and a number one debut on iTunes,

he becomes one of the hottest names in music.

Here to perform "Life of the Party"

Please welcome 16-year-old, Shawn Mendes.

[cheers and applause]

[acoustic guitar music]

- [singing] I Love it

When you just don't care

I love it when you dance like there's nobody there

So when it gets hard, don't be afraid

We don't care what them people say

I love it when you don't take No

I love it when you do what you want

'cause you just said so

Let them all go home, we out late

We don't care what them people say

We don't have to be ordinary

Make your best mistakes

'Cause we don't have the time to be sorry

So, baby, be the life of the party

I'm telling you to take your shot

It might be scary

and hearts are gonna break

'Cause we don't have the time to be sorry

So, baby, be life of the party

Together we can just let go

Pretend like there's no one else here that we know

Slow dance, fall in love as the club track plays

We don't care what them people say

And we don't have to be oridinary

Make your best mistakes

'Cause we don't have the time to be sorry

So, baby, be the life of the party

I'm telling you to take your shot

It might be scary

And hearts are gonna break

'Cause we don't have the time to be sorry

So, baby, be the life of the party

Come out tonight, come out tonight

There's no one standing in your way

Come out tonight, come out tonight

We don't care what them people say

No, we don't care what people say

We don't have to be ordinary

Make your best mistakes

'Cause we don't have the time to be sorry

So, baby, be the life of the party

I'm telling you to take your shot

It might be scary

And hearts are gonna break

'Cause we don't have the time to be sorry

So, baby, be the life of the party

[cheers and applause]

Thank you.

- Great. - Thank you.

Thank you so much.

The name of the CD is "The Shawn Mendes EP."

Everybody in the audience, you're going home with a copy.

We're back with the wonderful Shawn Mendes.

- Hello. - Welcome back.

- Thank you. - It's good to have you here.

- Thank you for having me here.

- Yeah, you're terrific.

You have millions of followers on Vine.

And we have two of them in our audience,

and I would like to like to call two of them down.

Alexa Daffern and Andrea Hidalgo?

[cheers and applause]

- They're here.

Hello. Can I get a hug?

- Oh, my god. - Hi. Hi.

- Hi. - How are you?

- I'm good. How are you?

- Hello. - Hi.

- How are you? - I'm good.

Thank you. How are you?

- Yeah, I'm the one getting you down here.

Hug me, yeah. [laughter]

All right. Have a seat if you want.

- You sit. I'll sit here.

- All right, you two sit here.

- Okay, thank you. - Can you fit? Okay.

- So you've seen his six-second videos?

- Yes, I have. - Yeah?

What do like about them?

What's the best thing about Shawn?

- Everything. - Everything?

-Everything, yeah.

- Everything about him is fantastic?

- Yeah, well, he's really talented.

He's really inspiring, so...

- Thank you.

- Yeah, he is talented and inspiring.

All right, here's what we're gonna do.

We're gonna give you tic... He's not gonna be there,

but there's gonna be a bunch of other cool people there.

You like music.

And this is his idea, so it's coming from him.

You're gonna get tickets to a iHeart Music Festival

in Las Vegas, and

[cheers and applause]

- What? - Yeah.

- Oh, thank you.

- If you can get them separated.

They're stuck.

[cheers and applause]

- All right, just in six seconds,

tell us why you love Shawn so much.

Go.

- He's kind of perfect and talented in singing,

and I love him so much.

- Go.

[laughter]

- You were really good at that.

[bell dinging]

- I'm sorry.

- No?

[laughter]

- I can't.

- All right, well, you still get to go.

You're gonna see people like Taylor Swift

and Coldplay and Nicki Minaj and One Direction

and Shawn's favorite, Ed Sheeran, is gonna be there.