Vehicle body side portion structure

A vehicle body side portion structure in which a roof side rail provided at a side portion of a roof and a side sill provided at a side portion of a floor are connected by a center pillar, wherein:

• the center pillar includes an upper pillar section having an upper end joined to the roof side rail and a lower pillar section having a lower end joined to the side sill;
• the upper pillar section is formed by a hollow metallic pipe which is constituted by a high-strength steel plate, has a substantially constant cross-sectional shape, and is convexly curved outwardly in a vehicle width direction;
• the lower pillar section is formed by two pressed components which are constituted by a steel plate having lower strength than the steel plate of the hollow metallic pipe of the upper pillar section and are joined to each other in the vehicle width direction into a closed cross-sectional shape;
• and
• a circumference of a lower edge part of the upper pillar section is joined to the two pressed components in a state where the lower edge part of the upper pillar section is inserted within a section configured by the two pressed components of the lower pillar section and having the closed cross-sectional shape.