Is s/he fairly open-minded, or is she a bit straight laced?
straight-laced style, with a longer dress was imposed.
On the one hand, we had a rather straight-laced concept of university life.
A more straight-laced style, with a longer dress was imposed.
That being said, there are some ties from this line that skirt the line between whimsical and straight-laced, and would be appropriate for a fairly conservative office setting.