I'm a B too and can't wear boxy-pleated pants or skirts, especially made from thicker fabric (think 1980's style). However, I think I could wear the skirt in this week's Profile because it looks to be made from a lightweight, seemingly more clingy fabric. I would think these small pleats would add vertical lines to help the body look taller and leaner. As a petite B, I would definitely have to hem it around knee-length to make it work for me though.
I'm just guessing on this. Hopefully, Leslie will get a chance to give you the expert's answer on this.