You can throw a capo on somewhere
The whole thing is basically D/G/Bm/A with some Dsus's thrown in

D Dsus2 D Dsus4

[Verse 1]
D
You made me insecure
G
Told me I wasn't good enough
Bm
But who are you to judge
A
When you're a diamond in the rough
D
I'm sure you got some things
G
You'd like to change about yourself
Bm
But when it comes to me
A
I wouldn't want to be anybody else

D
Na na na na na na na na na
G
Na na na na na na na na na
Bm
I'm no beauty queen
A
I'm just beautiful me
D
Na na na na na na na na na
G
Na na na na na na na na na
Bm
You've got every right
A
To a beautiful life 
C'mon


[Chorus]
D                            G
Who says Who says you're not perfect 
                    Bm
Who says you're not worth it 
                    A            
Who says you're the only one that's hurting
D                            G
Trust me That's the price of beauty
                    Bm
Who says you're not pretty
                    A
Who says you're not beautiful
    D
Who says

(D) Dsus2 D Dsus4

[Verse 2]                    
It's such a funny thing
How nothing's funny when it's you
You tell 'em what you mean
But they keep whiting out the truth
It's like a work of art
That never gets to see the light
Keep you beneath the stars
Won't let you touch the sky

Na na na na na na na na na
Na na na na na na na na na
I'm no beauty queen
I'm just beautiful me
Na na na na na na na na na
Na na na na na na na na na
You've got every right
To a beautiful life
C'mon


[Chorus]


[Bridge]
D
Who says you're not star potential
G
Who says you're not presidential
Bm
Who says you can't be in movies
A
Listen to me, listen to me
D
Who says you don't pass the test
G
Who says you can't be the best
Bm
Who said, who said
A
Won't you tell me who said that 
A
yeah, who said?

(you can do the D Dsus2 D Dsus4 instead of those two A's)

[Chorus x2]

Enjoy :)