Quote Originally Posted by iMUSTbeTHEdevil
Maybe to show us that time had passed since Naruto left and finally she was too busy training to cut her hair! -dg-
If time has passed and her hair grew back, we should've seen some growth as well. All we saw was little 12 year old Sakura from the first arc.

I'm just going to take it in as the animators screwed up.