Hilary Duff is hot and her music is cool. I tabbed this song after listening to it by 
it's pretty fun and easy to play. I recommend it for beginners. So here it is...:)

INTRO:
[1st Guitar](PALM MUTE on this single note)(Relatively slow)
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---4444444444--(continues for a while during intro--|
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CHORUS:
[1st Guitar]
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---44444444/66666666\44444444/9999\888\44444444/--|
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(continued)
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---66666666\44444444/999\888\4---------------------|(Let last note ring)
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VERSE:
[1st Guitar] (Play these single notes PALM MUTED)
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-4-44-44----3-33-33----1-11-11--------------------|
----------------------------------2-22-22---------|
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(Continued)                                         {Play Four Times
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-4-44-44----6-66-66----4-44-44--------------------|
----------------------------------2-22-22---------|
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CHORUS:
[1st Guitar]
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---44444444/66666666\44444444/9999\888\44444444/--|
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(Continued)
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---66666666\44444444/999\888\4---------------------|(Let last note ring)
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[2nd Guitar in background] (Listen for rythem of strumming)
(Also has a slight Flange effect)
---6--|
---7--|(This chord kicks in after a few seconds, so listen for it)
---6--|
---8--|
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------|
Verse:
[1st Guitar](This follows after the bass riff)
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-----4-4-3-3---------------------------------------|(Play this little riff for a while)
-------------4-3-----------------------------------|
-2-2-----------------------------------------------|
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[2nd Guitar] (Use Harmonics on these notes)
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-------------------------------12*---------12*----|
-------7*--------7*--------12*---------12*--------|
----7*--------7*-------12*---------12*------------|
-7*--------7*-------------------------------------|
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(continued)
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---------------------------------12*---------12*--|
-------7*--------7*----------12*---------12*------|
----7*--------7*---7*----12*---------12*----------|
-7*--------7*-------------------------------------|
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Well that's it fellas..the song basically repeats itself after this and ends...Good song...Enjoy. :)