A sharp square pattern is enough to keep the casual connotations of the<b> Pia trousers </b>in check. The velvet drawstring that cinches the waist of this <a href=" http://www.selfridges.com/GB/en/cat/Claudie-Pierlot/" style="text-decoration: none"><font color="black"><b>Claudie Pierlot</b></font></a> pair provides a sportswear-inspired slant, brought in line by the chalky pattern and sharply tapered cut. As such, it toes the line between smart and insouciant – a tucked-in shirt means business, while a slouchy sweatshirt would indicate otherwise.