Gisele is wearing a very long hair style that features long wavy layers and lots of highlights/lowlights.

Create this style on your own by blow drying your hair with a diffuser attachment.  A curl-enhancing gel or cream will help you create the waves and curls.

Add the waves with a medium barrel curling iron or hot rollers.

Pull back the hair in the crown area into a low ponytail, secure into place. Leave out a few wispy bangs for added glamour.