[Verse 1: Calum, Calum & Michael]
You're insecure, don't know what for
You're turning heads when you walk through the door
Don't need makeup to cover up
Being the way that you are is enough

[Pre-Chorus: Ashton]
Everyone else in the room can see it
Everyone else but you

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

[Verse 2: Calum, Luke]
I've tried playing it cool
But when I'm looking at you
I can't ever be brave
'Cause you make my heart race
Shot me out of the sky
You're my kryptonite
You keep making me weak
Yeah, frozen, I can't breathe
[Pre-Chorus: Michael]
Something's gotta give now
'Cause I'm dying just to know your name
That I need you here with me now
'Cause you've got that one thing

[Chorus: All]
So get out, get out, get out of my head
And fall into my arms instead
I don't, I don't, don't know what it is
But I need that one thing
And you've got that one thing

[Breakdown: Luke, Michael, Ashton]
Baby, you light up my world like nobody else
The way that you flip your hair gets me overwhelmed
But when you smile at the ground, it ain't hard to tell
You don't know, oh, oh, you don't know you're beautiful (Oh)
One two, three

[Chorus: All]
Get out, get out, get out of my head
And fall into my arms instead
I don't, I don't, don't know what it is
But I need that one thing
And you've got that one thing