Hay do yall no that when they fillmed the movies thay got Sirius and Snape mixed up?
Yah look in a chapter in the fith book and read there descripitons very carefully

In the movie Snape has long hair and Sirius has short hair
Look Sirius has been in prision for 12 years. I dont think thay give you hair cuts in Azskaban <_< (sorry if spelt worong)

So if this is right then are they going to have Sirius's hair cut in this movie?

I can see a dementor now "How do you want it, You know that you have split ends