Do u think that we should call Kate:Princess Catherine(maybe princess of Cambridge), just like we call Diana: Princess Diana of Wales - even though she has no royal blood?

I do think we should call Kate Princess Catherine because we called the late Diana Princess Diana. Even she has no royal blood and is not a member of the aristocracy like Diana was, Kate deserves all the same privliges that Diana had.

Oh, give us some time
and we will grow into calling her Princess Catherine

but if she is a princess she would be princess of wales not Cambridge. she is the duchess of Cambridge. actually she is not a princess at all but because she is married to William and he is the prince of wales technically she is the princess of wales.
and on the other not, i think princess catherine has a nice ring to it and since the media has already subbed her that. i think its appropiate