Rachel McAdams sweet updo was formal enough for the red carpet (Yes, the silver Marchesa gown definitely helped dress the look up!) but with the loose tendrils and wavy texture, this style lends itself to a variety of occasions. To recreate Rachel's 'do, start by backcombing hair through the crown and spritzing with a little hairspray to add texture. Then, finger comb hair back and secure it into a loose pony tail above the nape of the neck. Next, twist, loop and pin one-inch sections of the ponytail and mist with more hairspray to finish.