The wigs for Christine have varied over the years and from production to production. She was always wigged as brunette in every single production, BUT depending on the execution of the wigs by the resident hair staff/associate hair designers, the actual styling could differ... Some of the best wigs for the role have been seen in Hamburg, Broadway (this decade), and Australia.
That being said, earlier this decade, a few blond Christines popped up in Europe...they were so wigged in the Stuttgart production and the Copenhagen production.
Please note to all...no matter who has played Christine, she has ALWAYS been wigged...that hairstyle would destroy a head when executed 6 times a week.
How to properly use its/it's:
Its is the possessive. It's is the contraction for it is...