Fill an empty spray bottle with water. Mist the water into the air, then walk through the misty water. Just dampen your clothes slightly so both the front and back of the garment come into contact with the water. The water will discharge the static electricity.
Slap some lotion onto your skin, then put on your clothes. The lotion will help prevent static from forming.
Run a wire coat hanger inside of the garment. The metal will draw off the electric charge that's causing the static. Glide the hanger between your body and the clothing a few times and the static will be history.
Take off the clothes if necessary and put them in a dryer for 10 minutes on low heat. Add a dryer sheet, along with a damp washcloth, to keep the air from getting too dry.
Remove clothes from your dryer while they are still slightly damp and let them air-dry the rest of the way. Electrical charges don't do well in moisture, so this approach will keep static at bay.