Hair Highlights: Great Lengths

The Body: Even the hair on supermodel Elle Macpherson lives up to her The Body nickname.

Growing Wild: Although Katie Holmes reinvented her look with a short, chic bob, she has since gone back to the laid-back locks of her Dawson's Creek days.

California Dreamin': British beauty Sienna Miller goes for relaxed, beach-y hair, even at home in London. ON POWERWALL: Kate Middleton's Long Locks & Fashionable Looks

Straight Talk: Gabrielle Union's long, smooth strands and sleek side part make a chic statement.

Making Waves: Sexy bombshell hair is perfectly suited to Sofia Vergara.

Bouncy-bouncy: With full, slightly teased curls, Julianne Hough revs up the volume on her normally more subdued look.

Layer It On: Julia Stiles opts for long layers to help add movement and definition to her fine hair.