A September wedding can be just as sticky as a summer one. Pick lightweight and airy clothing for the wedding gown and bridal party. Warm weather can create sweat, so use airbrush makeup. After the ceremony and formal photos, change into a simpler dress made of comfortable, lighter material. If you have long hair, choose an updo hair style that gets it off your neck and helps prevent flyaways in the breeze. Enjoy your day in the sun, stay cool and look your best.