Starts off without Bass.
G|--------------------------------------------|
D|--------------------------------------------|
A|-------------1111---------------------1111--|
E|-9/-99-99-99------1212-1212-1212-1212-------|
11 & 12, not 1 & 2.

Repeat couple of times.

G|-----------------------------------------------------------------------------------|
D|-----------------------------------------------------------------------------------|
A|----------11-11--------------------------------------------------------------------|
E|-99-99-99--------------------------------------------------------------------------|

You might have to repeat these much more than I tabbed here:
G|-------------------------------------------------|
D|-------------------------------------------------|
A|-------------------1111--------------------------|
E|-121212121212121212-----99999999999-555555444555-|
[ Tab from: http://www.guitartabs.cc/tabs/k/kings_of_leon/sex_on_fire_btab_ver_2.html ]
Chorus
G|------------------------------------------------------------|
D|-------------------------------------------------------9-11-|
A|-----------------------9-11----------------------11-11------|
E|-1212121212121212121212----1212121212121212121212-----------|

G|-----------------------------------|
D|-----------------------------------|
A|-----------------------------------|
E|-9999999999999999-5555555555555555-|

Verse
G|---------------------------------------------|
D|---------------------------------------------|
A|---------------------1111-------------11-11--|
E|-1212-1212-1212-1212------99-99-99-99--------|
Repeat couple of times.

G|------------------------------------------------|
D|------------------------------------------------|
A|--------------11111111--------------------------|
E|-121212121212----------99999999999-555555444555-|

'Bridge'
G|----------------------------------------------------------------|
D|----------------------------------------------------------------|
A|----------------------1111------------1111----------------------|
E|-1212 1212 1212\-1212-------99-99-99-99-----1212-1212-1212-1212-|

G|---------9---------------------------------------------------|
D|-------9---11111111111111111111111111111111-7777777777777777-|
A|----11-------------------------------------------------------|
E|-12----------------------------------------------------------|