Who: Kristen Stewart
Where: "Twilight Saga: Breaking Dawn Part 2" LA Premiere

"Twilight" star Kristen Stewart channels Old Hollywood glamour wearing retro Veronica Lake-inspired waves -- with a modern twist.

Get her look: Add hair texturizer from roots to ends and hand-dry hair until completely dry. Make a deep side part. Spray 1-inch sections of hair with hairspray then curl them using a 1-inch barrel curling iron. Pin curls in place and let cool. Remove pins and gently brush out curls. Slick back one side of the hair, twist, and pin in place.

Who: Cameron Diaz
Where: "Gambit" UK Premiere

A cute bun adds a romantic touch to Cameron Diaz's look and shows off her long swan-like neck.

Get her look: Rough-dry hair and scrunch to add texture and volume. Blow-dry bangs forward with a small round brush, rolling at the ends to create a soft bend. To the rest of the hair, spray a hair texturizer to the roots and backcomb. Twist hair into a bun and bobby-pin in place. Pull out a few face-framing pieces. Spray with hairspray then tousle for texture.

Who: Jessica Biel
Where: "Total Recall" Berlin Premiere

Jessica Biel flaunts her gorgeous features by wearing her hair up in a polished bun, topped off with straight, blunt bangs.

Get her look: Blow-dry bangs using a vent brush, with the dryer nozzle pointing downward. Dry the rest of your hair, then pull hair back into a ballerina bun, and bobby-pin in place.

Who: Malin Akerman
Where: "Rock of Ages" World Premiere

Malin Akerman sweeps her soft waves to the side for a polished yet sexy look.

Get her look: Make a very deep part, then blow-dry hair straight. Using a medium-size round brush, wrap sections of hair around the brush and blast with heat. Hold the brush for a few seconds then release when cooled -- this will give a nice wave to the ends. Sweep hair to one side and finish with a mist of lightweight hairspray.

Who: Jennifer Garner
Where: CinemaCon 2012 Walt Disney Studio Motion Pictures Event

Jennifer Garner's volumized bob is not too perfect and channels laidback elegance.

Get her look: Apply styling cream to damp hair and blow-dry with a large paddle brush, turning brush at the ends to add soft bends. After drying, take a dab of styling cream and run fingers through hair.