[Originally by Hilary Duff]    You can change your life (If you wanna)  You can change your clothes (If you wanna)  If you change your mind  Well, that's the way it goes    But I'm gonna keep your jeans  And your old black hat ('Cause I wanna)  They look good on me  Your never gonna get them back  At least not today, not today, not today,  Cause...    If it's over let it go and,  Come tomorrow it will seem,  So-o Yesterday So-o Yesterday,  I'm just a bird that's already flown away    Laugh it off  Let it go and  When you wake up it will seem  So-o yesterday  So-o yesterday  Haven't you heard that I'm gonna be oka-ay     You can say you're bored (If you wanna)  You can act real tough (If you wanna)  You could say you're torn  But I've heard enough    Thank you  You've made my mind up for me  When you started to ignore me  Do you see a single tear  It isn't gonna happen here  At least not today, not today  Not today, 'cause    If it's over let it go and  Come tomorrow it will seem  So-o yesterday  So-o yesterday  I'm just a bird  That's already flown away    Laugh it off  Let it go and  When you wake up it will seem  So-o yesterday  So-o yesterday  Haven't you heard that I'm gonna be oka-ay    If you're over me, I'm already over you  If it's all been done, What is left to do  How can you hang up, If the line is dead  If you wanna walk, I'm a step ahead  If you're movin' on, I'm already gone  If the light is off, Then it isn't o-on  At least not today,Not today  Not today, 'cause    If it's over let it go and  Come tomorrow it will seem So-o yesterday ,So-o yesterday  I'm just a bird  That's already flown away    Laugh it off  Let it go and  When you wake up it will seem So-o yesterday,So-o yesterday  Haven't you heard you're so-o (yesterday)  So-o yesterday  I'm just a bird  That's already flown away  Laugh it off  Let it go and  When you wake up it will seem So-o yesterday,So-o yesterday    Haven't you heard that I'm gonna be okay?