Doesn't work for me. I have crafted 10 pieces of this noble dress, I even wear one of them, but still no title.

ALL titles for costumes is 1 calpheon noble suit for male classes for the first title, 11 costumes for the expert title. It is exactly for the female calpheon dresses. for example: first title for sorc is for one dress made, expert title is 11 dresses made. (so 11 costumes made in total, not ten)

It is 11 costumes total, not ten.