This messy twist is a perfect formal updo. Gather all of your hair at the nape of your neck, but leave some face-framing tendrils in front and right at the peak of your forehead. Start to create a French twist with your hair, but only twist halfway up, and be messy about it. Instead of tucking the ends into the twist, leave them out and wild. Tease your hair and create mini buns and rolls. Use bobby pins to secure pieces randomly on top to create the messy overflow. Use hairspray to secure your creation.
Use a curling iron to create gentle waves with the pieces in front. Gently tease the hair right above your forehead (or your long bangs) to create volume. Pin those pieces back into the top of your messy twist to create texture. Also, use bobby pins to tuck the tendrils back and into the sides of your updo. This will create keep the loose look going instead of having your hair slicked back.
It's not one of the simplest 'dos to pull off, but if you want a modern, messy updo, this will turn heads.