Celeb Fashion Hit or Miss?

The Hills star hits the streets of L.A. in a fitted Mason vest, Lux jeans and moccasin boots.

The Oscar winner wakes up the premiere of Sleepwalking in a Lanvin gray silk dress with ribbon and metal detailing.

The fashionable actress picks up one of spring’s biggest trends – colorblocking – in her low-waisted tunic while hanging out in Australia.

Miller gets ruffled up in a sweet sundress and tough Thomas Wylde ankle boots while lunching in L.A.

Not exactly standard chef whites for this star, who wore a delicate Marchesa dress and LAI clutch to the opening of her new L.A. restaurant Beso.

The Jumpers star adds edge to her street style with studded Christian Louboutin boots, skinny jeans and a leather jacket.

The Elizabeth Arden spokeswoman makes a chic turn in a navy Oscar de la Renta dress and yellow Gucci coat while re-opening the brand’s 5th Avenue store.

Hitting the premiere solo, The Hills co-star holds her own in a purple silk tunic and peep-toe pumps at the L.A. premiere of Sleepwalking.

The model-turned-actress returns to her roots as she celebrates being the face of bebe in a stylish all-black look from the brand.

The Ugly Betty actress helps costar Rebecca Romijn celebrate her bebe campaign in a chic chevron-print Chloe sheath.

The singer is sweet in her black jumper and white blouse as she performs at the Flemington Festival of Racing in Melbourne, Australia.

The actress blooms into the bebe celebration in a bold yellow floral bebe dress.

The Heroes actress is true blue in her tiered Foley frock at the 16th Annual “A Night at Sardi’s” Alzheimer’s fundraiser.

The actress channels a fellow fashionista – Kate Moss! – as she makes her way out of a dinner in New York in a shaggy black jacket, leggings and Dolce & Gabbana bag.

The birthday girl – who turned 34 yesterday – goes on a Madison Avenue shopping spree to celebrate in a sophisticated gray look by Calvin Klein.

The Married Life star smolders in black and Tiffanyt & Co. Jewels at a N.Y.C. screening of the film.

The statuesque actress is chic in an elegant black pantsuit and upswept hair at the 6th Annual Wings Worldquest Women of Discovery Awards Gala.

The supermodel heads out for a night on the town in London in an all-black outfit, including shimmering dark jeans.

The 10,000 BC star is simply striking in her long straight locks and exotic fern-patterned Gucci gown at the film’s L.A. premiere.

The actress goes for a simple one-shouldered black dress at the 10,000 BC premiere.

The actress celebrates her Paper magazine cover at a private luncheon in L.A. in a traffic-stopping Jeremy Scott miniskirt and curvy blazer.

The actress (with Avon CEO Andrea Jung) embraces her role as Avon Global Ambassador at the United Nations in a sharp black suit, pale pink satin heels – and her Women’s Empowerment Bracelet.

With her Spice Girls tour behind her, the singer returns to mom duty – throwing a birthday bash for son Romeo in a patterned Marc Jacobs dress with matching red bag and heels.

The country singer keeps it simple in a turquoise blouse and black pencil skirt while announcing the 2008 Academy of Country Music nominations.

After partying in New York with boyfriend Tony Romo, the singer heads out of town in a rock T-shirt, bootcut jeans and her new favorite Roberto Cavalli leopard-print bag.

The mom-to-be is radiant in an ivory Temperley London gown, Bulgari jewels and Roger Vivier accessories at The Eye’s Paris premiere.

The actress makes a stylish appearance in a purple minidress and hot pink heels at a Paris Fashion Week party.

The Hills star is all blue in her silk top and skinny jeans as she makes her way into L.A. hotspot Villa.

The quirky actress goes for her version of the little black dress at the Miu Miu show in Paris.

The actress is spring-ready in her pale pink coat, beige boots and Christian Dior bag as she makes her way through JFK airport in New York City.

The Flawless actress lives up to her billing in a cream Temperley London dress at a Miami press conference for the film.

The sunny actress shows off her flawless legs in a 3.1 Phillip Lim mindress as she makes her way through Miami.

In New York to film a new movie, the actress is the picture of urban sophistication in shades of army green.

The singer leaves dinner with her boyfriend Tony Romo in New York in a peekaboo black sweater, jeans and a leopard bag.

The actress hits the streets of L.A. in a casual striped t-shirt, jeans and red accessories.

The supermodel is casual cool in skinny jeans, a tweed jacket and a YSL purse as she heads to a meeting in London.

Showing off the bold floral trend for spring, the actress gets ruffled up in Oscar de la Renta at the 23rd Annual Women’s Project Women of Achievement Gala in New York.

The actress attends Cosmopolitan’s Fun Fearless Male of the Year Awards in a turquoise Temperley London dress and bright blonde locks.

The star shows off one of the season’s most popular prints –stars! – in her oversize blouse, jacket and slim jeans combination while walking to the Fendi party in Paris.

With her long leopard scarf, the petite actress adds a spot of the wild to her black outfit at the John Galliano fashion show.

The mom-to-be glows in belted gray Lanvin at the line’s show in Paris.

The singer makes time for a little bit of shopping in a tough girl outfit – check out the shiny leggings and leopard print purse! – between fashion shows in Paris.

The Hills star takes it easy in a floral-print dress from her line’s fall collection while strolling through Los Angeles.

The Desperate Housewives star keeps it simple in a white blouse and black pencil skirt at an event for the Padres Contra El Céncer event in L.A.

Befitting her Cashmere Mafia alter-ego, the actress is chic in a gray tweed suit at the John Galliano show in Paris.

The actress stays bundled up in her gray Louis Vuitton coat as she heads into the designer’s fashion show in Paris.

The Miss Pettigrew Lives for a Day star is sharp in black and silver Narciso Rodriguez at the New York premiere of the film.

The actress takes a casually stylish walk through L.A. with her Christian Dior bag (Mary-Kate Olsen has the same one!).

The singer is cool in a leather jacket and wide-leg jeans at the UK launch of BET.