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

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

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

[Verse 2]
[Zayn]
So c-come on,
te 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 te light up my world like nobody else,
The way that te flip your hair gets me overwhelmed,
But when te smile at the ground it ain't hard to tell,
te don't know,
Oh oh,
te don't know you're beautiful,
If only te saw what I can see,
You'll understand why I want te so desperately,
Right now I'm looking at te and I can't believe,
te don't know,
Oh oh,
te don't know you're beautiful,
Oh oh,
That's what makes te beautiful

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

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

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

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

[Harry]
That's what makes te beautiful

[From: link