I've seen the other tabs to this song and they're ok... but i think this sounds better  :)

Standard Tuning

Capo 6

*Cadd2/B: x20010

Intro:

C (x32010@1)   Cadd2/B     Am (x02210@1)       Am (x02210@1) G (320003@1)   x2

(Play the last Am and G  quickly throughout the song)

C (x32010@1)                     Cadd2/B
I hopped off the plane at LAX 
         Am (x02210@1)                        Am (x02210@1)Gwith (320003@1)a dream and my cardigan
C (x32010@1)                   Cadd2/B          Amwelcome (x02210@1)to the land of fame excess (whoa),
                       Am (x02210@1)G (320003@1)am I gonna fit in? 

CJumped (x32010@1)in the cab,
   Cadd2/B               Am (x02210@1)Here I am for the first time
Am (x02210@1)                        Am (x02210@1) GLook (320003@1)to the right and I see the Hollywood sign 
C (x32010@1)            Cadd2/B   AmThis (x02210@1)is all so crazy
Am (x02210@1)                  Am (x02210@1)GEverybody (320003@1)seems so famous 

C (x32010@1)                        Cadd2/B              AmMy (x02210@1)tummy's turnin' and I'm feelin' kinda home sick
Am (x02210@1)                                Am (x02210@1)G (320003@1)Too much pressure and I'm nervous,
C (x32010@1)                                 Cadd2/B 
That's when the taxi man turned on the radio
     Am (x02210@1)                Am (x02210@1)G (320003@1)and a Jay Z song was on 
    Am (let ring)
and a Jay Z song was on
   (no chords) 
and a Jay Z song was on 

CHORUS:
            CSo (x32010@1)I put my hands up
       Cadd2/B
They're playing my song,
       Am (x02210@1)                      AmG
And the butterflies fly away
C (x32010@1)                 Cadd2/B
Noddin' my head like yea
Am (x02210@1)                           AmG
Movin' my hips like yea 
          CI (x32010@1)got my hands up, 
       Cadd2/B
They're playin my song 
  Am (x02210@1)                       AmG
I know I'm gonna be ok 
CCadd2/B (x32010@1)Am (x02210@1)             Am (x02210@1)GYea, (320003@1)It's a party in the USA
CCadd2/B (x32010@1)Am (x02210@1)             Am (x02210@1)GYea, (320003@1)It's a party in the USA 

(Repeat chords from first verse)

Get to the club in my taxi cab 
Everybody's lookin' at me now 
Like "who's that chick that's rockin' kicks? 
She gotta be from out of town" 

So hard with my girls not around me 
Its definitely not a Nashville party 
'Cause all I see are stilettos 
I guess I never got the memo 

My tummy's turnin' and I'm feelin kinda home sick 
Too much pressure and I'm nervous 
That's when the D.J. dropped my favorite tune 
and a Britney song was on 
and a Britney song was on 
and a Britney song was on 

CHORUS: (Repeat chords)
So I put my hands up 
They're playing my song, 
And the butterflys fly away 
Noddin' my head like yea 
Movin my hips like yea 
I got my hands up, 
They're playin my song 
I know im gonna be ok 
Yea, It's a party in the USA 
Yea, It's a party in the USA 

Cadd2/B                    AmFeel (x02210@1)like hoppin' on a flight (on a flight) 
Cadd2/B                    AmBack (x02210@1)to my hometown tonight (town tonight)
Cadd2/B                    Am (x02210@1)Something stops me every time (every time)
Cadd2/B                    G (320003@1)The DJ plays my song and I feel alright 

CHORUS: (Repeat chords til the end)
So I put my hands up 
They're playing my song, 
And the butterflies fly away 
Noddin' my head like yea 
Movin' my hips like yea 
I got my hands up, 
They're playin' my song 
I know I'm gonna be ok 
Yea, It's a party in the USA 
Yea, It's a party in the USA 

So I put my hands up 
They're playing my song, 
And the butterflies fly away 
Noddin' my head like yea 
Movin' my hips like yea 
I got my hands up, 
They're playin' my song 
I know I'm gonna be ok 
Yea, It's a party in the USA 
Yea, It's a party in the USA