[Verse 1]
[Liam]
You're insecure,
Don't know what for,
You're turning heads when あなた walk through the door,
Don't need make-up,
To cover up,
Being the way that あなた are is enough,

[Bridge]
[Harry]
Everyone else in the room can see it,
Everyone else but you,

[Chorus]
[All]
Baby あなた light up my world like nobody else,
The way that あなた flip your hair gets me overwhelmed,
But when あなた smile at the ground it ain't hard to tell,
あなた don't know,
Oh oh,
あなた don't know you're beautiful,
If only あなた saw what I can see,
You'll understand why I want あなた so desperately,
Right now I'm looking at あなた and I can't believe,
あなた don't know,
Oh oh,
あなた don't know you're beautiful,
Oh oh,
That's what makes あなた beautiful

[Verse 2]
[Zayn]
So c-come on,
あなた got it wrong,
To prove I'm right,
I put it in a song,
I don't know why,
You're being shy,
And turn away when I look into your eye eye eyes,

[Bridge]
[Harry]
Everyone else in the room can see it,
Everyone else but you,

[Chorus]
[All]
Baby あなた light up my world like nobody else,
The way that あなた flip your hair gets me overwhelmed,
But when あなた smile at the ground it ain't hard to tell,
あなた don't know,
Oh oh,
あなた don't know you're beautiful,
If only あなた saw what I can see,
You'll understand why I want あなた so desperately,
Right now I'm looking at あなた and I can't believe,
あなた don't know,
Oh oh,
あなた don't know you're beautiful,
Oh oh,
That's what makes あなた beautiful

Na Na Na Na Na Na Na Na Na Na
Na Na Na Na Na Na [x2]

[Middle 8]
[Harry]
Baby あなた light up my world like nobody else,
The way that あなた flip your hair gets me overwhelmed,
But when あなた smile at the ground it ain't hard to tell,

[All]
あなた don't know,
Oh oh,
あなた don't know you're beautiful,

[Chorus]
[All]
Baby あなた light up my world like nobody else,
The way that あなた flip your hair gets me overwhelmed,
But when あなた smile at the ground it ain't hard to tell,
あなた don't know,
Oh oh,
あなた don't know you're beautiful ([Harry:] Oh),
If only あなた saw what I can see,
You'll understand why I want あなた so desperately ([Harry] desperately),
Right now I'm looking at あなた and I can't believe,
あなた don't know,
Oh oh,
あなた don't know you're beautiful,
Oh oh,
あなた don't know you're beautiful ([Harry] beautiful),
Oh oh,

[Harry]
That's what makes あなた beautiful

[From: link