A draped gray sweater, slim jeans and his now-trademark mustache

BRAD PITT
Leaving his brood at home, the Curious Case of Benjamin Button star stays cool in a draped gray sweater, slim jeans and his now-trademark mustache while strolling through LAX.

Knee-high stiletto boots, skinny jeans and oversize tote

LAUREN CONRAD
The reality star is flawless in her knee-high stiletto boots, skinny jeans and oversize tote as she departs LAX.

Bright yellow Louis Vuitton

KATIE HOLMES
Flying in all white? No problem for this classically chic star, who tops off her outfit with a bright yellow Louis Vuitton purse, as she takes off from Nice, France.

Ivory Chanel gown, black one-shoulder gown

DIANE VS. KATE
The actress walked the red carpet at the Bambi Awards in Germany in her ivory Chanel gown, while the supermodel was feted at a VogueIcons event in Beijing in her black one-shoulder gown.

YSL dress , blue-and-black strapless dress.

BECKI VS. KYLIE
The Ugly Betty star kept it simple in her YSL dress at a fashion party in N.Y.C., while the singer launched her new perfume in Sydney in her blue-and-black strapless dress.

Newlywed paired her ivory 3.1 Phillip Lim blazer with cropped pants

SCARLETT VS. LINDSAY
The newlywed paired her ivory 3.1 Phillip Lim blazer with cropped pants at a Madrid photo call, while the leggings designer promoted her line in her black crystal-studded jacket in Los Angeles.

Nicole Miller dress, Trompe l'oeil dress over leggings.

JESSICA VS. BEYONCE VS. ELIZA
One dress, three stars, one week! The singer promoted her fragrance in Chicago in her Nicole Miller dress, while "Sasha Fierce" hit the stage in London in her trompe l'oeil dress over leggings. The actress heated up the red carpet in L.A. in her sparkling mini a few days later.

JEAN SHORTS AND TIGHTS

JEAN SHORTS AND TIGHTS
Can't bear to part with your cutoffs in the winter? Pair them with black opaque tights like Katie Holmes, Lily Allen and Kate Moss.

ONE-SLEEVE BLACK DRESSES

ONE-SLEEVE BLACK DRESSES
Amanda Bynes, Lauren Conrad and Jamie-Lynn Sigler take the one-shoulder trend one step further with their singularly sleeved little black dresses.

FULL-SKIRTED DRESSES

FULL-SKIRTED DRESSES
Amy Adams, January Jones and AnnaLynne McCord add extra emphasis to their '50s-style dresses with horizontal bands of pattern, lace and ruffles.

BOW-TOPPED DRESSES

BOW-TOPPED DRESSES
The proverbial cherry on top of these sexy one-shouldered dresses? The oversized bows, perfectly perched on the shoulders of Charlize Theron, Eva Mendes and Liv Tyler.

MULTICOLOR PRINTS

MULTICOLOR PRINTS
Last year's watercolor trend has given way to this year's art-print – a bold multi-hued look that owes more to Jackson Pollock than to Monet. Eva Mendes, Thandie Newton and The House Bunny's Emma Stone provide the perfect canvases for their bright sheaths.

ROSETTE HEELS

ROSETTE HEELS
Taking a bold, flowery step forward, Scarlett Johansson, Cameron Diaz and Eva Longoria Parker get a jump on spring with their sweet floral heels.

A short button-down shirt-dress, black tights

ANNE HATHAWAY
The actress shows off a little East Coast edge while making a coffee-run in Beverly Hills, wearing a short button-down shirt-dress, black tights and movie-star shades.

One-shoulder Balmain cocktail dress, black tights and Balenciaga shoes

SARAH JESSICA PARKER
Sex and the City's Carrie channels her onscreen character in a chic and sparkling one-shoulder Balmain cocktail dress, black tights and Balenciaga shoes for the opening night of the New York City Ballet.

White peacoat, matching beanie and colorful scarf.

MILEY CYRUS
The singer lights up the 82nd Annual Macy's Thanksgiving Day Parade in Manhattan in her white peacoat, matching beanie and colorful scarf.