How to Get Volume

Love these GIF How-tos from NYMag.com!
I actually do this, but only on the top crown of my head (I end up have a mohawk of rollers).

IT WORKS!
http://nymag.com/thecut/2013/05/gif-lesson-how-to-give-thin-hair-extra-volume.html?mid=facebook_thecutblog

Towel-dry wet hair, then blow-dry any excess moisture out. Follow with liberal spritzes of Oribe's Maximista Thickening Spray, focusing on the roots.

Step 3: Section hair

Twist hair up into separate sections and secure with a clip. There should be five in total: two top-center sections (the "Mohawk" portion of the head), one on either side of your temples, and one final section at the nape of your neck.

Step 4: Heat sectioned hair

Before you place each roller, give that section one more blast of heat with the blow dryer. You'll need that heat to lock in the roller's styling power. 

Step 5: Insert rollers

Start with the section closest to the front of your head so it will have the longest time to "set." If you have thicker hair, you will need to use more than one curler per section. Tip: Larger rollers can be used in the top sections, while smaller ones will be better for the lower regions of the head.

Step 6: Cool hair

Once all the rollers are in place, use the "cool" button on your dryer and pass cold air all over your head (focusing on the roots) to speed up the styling process. Or just let the rollers set as you do your makeup or get dressed; they will take fifteen to twenty minutes.

Step 7: Carefully unfurl hair from the rollers

Starting from the bottom, slowly remove each roller. Use your fingers as a guide to help unravel the hair; do not pull the roller out straight. This method will protect the curling action and prevent your hair from getting tangled or caught up in the Velcro.

Step 8: Hair-spray the roots

Once all the curlers are out, give the roots one final spritz of hair spray. This will help maintain the lift and keep the curls in place.

Step 9: Brush out hair

Use a comb to gently bring all of your hair together. If you want to get a second day out of all your hard work, add powder to the roots.