Brooklyn Decker’s new medium half-updo hairstyle is the best way to style the hair for a semi-formal event. To get her hairstyle, first apply a little amount of volumizing foam on the wet hair and mainly rub it on the roots. Next use a round brush to dry the hair and lift the hair at the roots to add more body. Collect few pieces of hair from top section of the head, then pull them back creating a half-updo and leave few strands around the face. Finally secure the half-updo using bobby pins and mist an anti-frizz hairspray all over the hair.