Ashley Tisdale's Subtle Ombre Hair

THE STYLE Deep espresso roots that fade slowly to a sandy brown

WHY WE LOVE IT Ashley Tisdale may not have bleached-out tips, but this subtle variation in colour is perfect . For a similar look, ask your colourist for a single process hue with partial highlights on the bottom half of the strands. Even a shade just a few notches lighter will add striking dimension and depth.

Michelle Williams's Low Ponytail

THE STYLE A low, textured ponytail at the nape of the neck

WHY WE LOVE IT Michelle Williams's low ponytail had a gentle, feminine appeal. If you have face-framing layers, pull back your hair and don't worry about the pieces that fall forward. Instead, wrap them around a curling iron for a flirty touch.

Vanessa Hudgens's Beachy Waves

THE STYLE Windblown strands

WHY WE LOVE IT  Paired with her natural makeup and bohemian tank, this low key look is sweet and free-spirited all at once.

Kate Bosworth's Silky Straight Look

THE STYLE Extra-straight strands parted slightly off center

WHY WE LOVE IT Kate Bosworth is the master of edgy, versatile looks, but this surprisingly simple one was perfect to preview Calvin Klein's collection. If going for an uber-straight style, a blast of shine spray will keep your strands from looking dull or lifeless.

Sienna's Loose, Glossy Waves

THE STYLE Sienna Miller's glamorous waves and deep side part

WHY WE LOVE IT The big curls are jaw-droppingly elegant, but not too formal. Smooth along the part with styling cream for neatness and hold, and be sure the waves start just below the ears. Combing through them with a bristle brush adds extra body and shine.

Kate Beckinsale's Sexy Ponytail

THE STYLE A curvy, textured ponytail at the center of the back of the head

INSIDE SCOOP Frederic Fekkai stylist Adir Abergel gave Kate Beckinsale this shapely, lifted ponytail. He backcombed the roots at the top of the head to create volume, leaving the sides flat before securing the hair at the crown. A few twists of the curling iron left the length of the ponytail thick and perfectly waved.