- All right.

- Tell everybody what's happening.

- Well, I'm going to do

my first-ever residency in Vegas at Caesars.

[cheers and applause]

Thank you.

And this is a special event for me,

and again, I have to hope that the fans will enjoy this

'cause I'm gonna be performing all--

this was kind of inspired by my album "#1's."

And this is now the updated version with--

there's 18 of them.

- 18 number one hits. - Thanks to the fans.

- 18 number one hits. [cheers and applause]

#lambily.

And hopefully other people will enjoy this.

I've never done this before.

I've never performed some of these songs, I'm like, "Really?

I'm gonna do that one again? Okay."

- It's...

"We Belong Together," "Vision of Love,"　"Emotions," "Fantasy,"

"Dream Lover," "One Sweet Day"--

- "Don't Forget About Us," "Touch My Body."

- You're always great with your fans,

and so you went to Caesars this weekend,

surprised a bunch of fans.

Let's take a look. - Let's take a look.

[Mariah Carey's "Emotions"]

Okay, so I decided to dress up as housekeeping.

A way to surprise some fans.

Ellen, I would do anything for you.

- Mariah Carey.

Mariah Carey is amazing.

- This is the place that you can see icons.

- Yes. - People like Mariah Carey.

- I really, really, really, really,

really, really, really want to see Mariah Carey.

- No one can top Mariah Carey.

I think that she's a absolutely incredible artist.

She's beautiful.

- Housekeeping.

- "We Belong Together" is one of my favorite songs,

even though I'm horrible at singing it.

- Excuse me, do you need a turndown service?

Okay, we go to the bed.

Housekeeping.

- [laughing]

- Mariah.

Mariah Carey would be amazing in Vegas.

A diva at the Colosseum.

- Turndown service?

[both laughing]

- And that's-- - Hi.

Turndown service.

- [bleep].

- Oh, my God.

- Housekeeping.

- Oh, my God. [all screaming]

- No, it's not.

- You need turndown--

- [screams] - [laughing]

- I can't believe it!

- Turndown service.

- [screams]

Oh, my God. Oh, my God!

- No way!

- Ellen allowed this to happen,

and I really hope that you come to my--

I'm having a show.

I'm doing all my number one songs that I've--

- Are you kidding?

- And it'll be here at Caesars, darling.

I'm giving you tickets to my show.

Do you want to come? - No!

- Please? - Yes!

- Aw. - Group hug.

- Bye. [smooches]

- Did that just happen? - Yeah.

- See you later. - Okay.

- We love you. - Bye.

- That was Mariah Carey!

Yes! - Oh, my God!

[cheers and applause]

- I love those reactions.

That was hilarious.

And then you were so kind.

You gave all of those people tickets to come see you

when you perform there.

That's really great.

- It's a new chapter for me, and I'm just excited about it.

- It's great. - Thank you.

- And you gave them tickets,

and it seems it's rude, if you gave them tickets,

that you wouldn't give all of them--

- I want to give-- [cheers and applause]

all your audience.

- I'm excited.

[cheers and applause]

- Yes.

[laughs]

Can I give this to you before I go to the--

[cheers and applause continue]

- Thank you.

- Uh-oh.

Did you want to see more videos?

Hold on.

[static hissing]

[cheers and applause]

- This is my first time on a talk show.

- What is it, Noah?

- My first time on a talk show.

- Oh, man.

Welcome.

[laughter]