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Recreate Jessica's latest look with this step-by-step guide, courtesy of celebrity stylist Mara Roszak:

Step One: On damp hair, apply TRESemmé 24 Hour Body Foaming Mousse all over hair, concentrating on the roots.

Step Two: Part hair in the center and blow dry with a medium-sized round brush, setting the top in big pin curls in random sections to achieve extra height.

Step Three: One hair is dry, remove the pin curls and spray TRESemmé Naturals Finishing Spray all over the hair and rough dry to add texture.

Step Four: Wrap the hair into a loose bun and pin the ends, letting it sit for 10 minutes. Take out the pins and shake hair loose to give it a slightly “lived-in” look.