Celeb Fashion Hit or Miss?

The Leatherheads star is a vision in red with her asymmetrical Carolina Herrera dress, Christian Louboutin heels and Cartier jewels for an appearance on David Letterman.

Giving her leather jackets a rest, the singer pairs her other favorite style – a skin tight black America Apparel mini – with big aviators and silver Jimmy Choo heels for a London party in her honor.

The actress steps out in support of her husband’s band in skinny jeans, a patterned coat and oversized Valentino bag for a Kenneth Cole charity event in L.A.

The Desperate Housewife shines in a shimmering Jay Godfrey minidress, Ippolita bangles and hoops and gold Cesare Paciotti platforms outside the Jimmy Kimmel Show.

The supermodel leaves her fur coats on the other side of the pond and opts for a striped tie-neck top and white Ray-Bans for a shopping stroll in L.A.

Reality TV’s favorite sidekick adds a pop of color to her Kenneth Cole tank dress with a trendy yellow belt – also Kenneth Cole – at a party for the designer in Los Angeles.

The TV host is the picture of spring in a purple Marc Jacobs dress and YSL pumps for a charity event in New York City.

In true Charlotte fashion, the Sex and the City star looks sweet in a white patent jacket, flowered skirt and matching shoes – all from Louis Vuitton – for an exhibit at the Brooklyn Museum for the designer.

She’s found a look and she’s sticking to it! The singer pairs another colored Gucci bomber jacket with a tight minidress, Alaia leggings and Roger Viver heels while promoting her record-breaking album in London.

The 21 star takes a chic stroll in L.A. in her white-striped Lauren Moffat dress, David Yurman jewelry and silver flats.

Posh hits vintage stores in L.A. in a ’50s-inspired, high-waisted Chloe Sevigny checked skirt, black Balenciaga buttondown, dVb sunglasses, Giambattista Valli bag and Christian Louboutin heels.

The new mom shows off her slim figure in faded bell-bottom jeans and a white T-shirt while attending driving school in L.A.

The actress tops her peekaboo black Rodarte dress with a matching Margiela coat and Balenciaga heeels to keep warm outside the N.Y.C. premiere of My Blueberry Nights.

The actress tops her slim gray ensemble with a flowing patterned scarf while walking in London.

The singer celebrates her first film role in a Moschino Cheap & Chic dress at the My Blueberry Nights premiere in Manhattan.

The Destiny’s Child singer channels a hippie vibe in her swirling Cavalli dress and floppy hat at the London launch party for the designer’s vodka.

Posh is casually chic in her faded dVb bellbottoms – this pair is from her Fall 2008 collection! – and an exotic-skin Giorgio Armani purse as she makes her way into Heathrow Airport.

The singer is all zipped up in her miniskirt and bomber jacket while attending a signing for her new album in London.

The actress celebrates her Seventeen cover in a trendy high-waisted skirt and simple tank top from her Dear by Amanda line.

The pop star keeps it cool for a shopping spree in L.A. in her splatter-paint Trash & Luxury T-shirt, gray jeans and her best accessory, her pet Maltipoo.

Carey promotes her latest single “Touch My Body” in Paris in an appropriately figure-flaunting black and white striped Burberry tunic and heels.

The fashionista shows off a color mix in Rag and Bone slacks, Marni top, Jil Sander jacket, Alexander McQueen heels and a Dolce & Gabbana purse at the N.Y.C. screening of Smart People.

The Leatherheads actress covers up in a sophisticated navy Carolina Herrera dress for the film’s Los Angeles premiere.

The Grey’s Anatomy star makes a simply elegant entrance into The Late Show with David Letterman in a pale blouse and wide-leg white slacks from J. Mendel.

George Clooney’s gal pal trades in her swimsuit for a sexy beaded Giorgio Armani dress at the Leatherheads premiere in Los Angeles.

The fortysomething model makes the most of her still flawless physique in a clingy turquoise Roberto Cavalli dress at the Leatherheads premiere.

The Oscar nominee cleans up in a chic gray Bottega Veneta dress at the N.Y.C. screening of her latest film, Smart People.

The Office funnywoman gets ruffled up in a feminine wrap dress by Milly at the Leatherheads premiere in Los Angeles.

The platinum actress goes for a little black dress, courtesy of Temperley London, at the AFI Dallas Film Festival.

The Mad Men star blends into the exotic scenery in her swirling Ferragamo dress at the brand’s 80th anniversary dinner in Shanghai.

The new mom of twins shows off her slim post-babies body in a draped black Reem Acra cocktail dress at the Shine a Light premiere in N.Y.C.

The leggy star is the picture of spring in her flowered Missoni minidress and cropped white jacket at Nickelodeon’s Kids’ Choice Awards in L.A.

The budding designer is her own best model in a high-waisted skirt and halter top while launching her line at Holt Renfrew in Toronto.

The mom-to-be shows off her growing bump in a flowing green Corey Lynn Calter dress at the Kids’ Choice Awards.

The Kids’ Choice double winner mixes high and low in her Stella McCartney dress and ABS pumps that she borrowed from her mom!

The 21 actress keeps it comfy in her long cardigan sweater over a patterned sundress while lunching in Los Angeles.

The Ugly Betty star glams it up in a beaded David Meister dress at the 21st Annual Kids’ Choice Awards.

Rizzo would be jealous: Carey channels the Pink Ladies of Grease in her cropped leather Gucci jacket, sexy America Apparel mini, Alaia heels and Marc Jacobs shades while promoting her new record in Paris.

The singer gets funky for the Kids’ Choice Awards red carpet in a printed H&M bustier and baggy Stella McCartney jeans.

The Australian singer is in step with spring in her one-shoulder printed dress and stiletto platforms as she enters her N.Y.C. hotel.

Simpson is perfectly chic in an McQ-Alexander McQueen gray strapless dress, Christian Louboutin heels and a Chanel cuff at the Kids’ Choice Awards.

The actress is honored at the 22nd Annual Genesis Awards for her humanitarian work with whales in an elegant Peter Hidalgo dress with a mini-bustle, Ferragamo heels and H. Stern jewels.

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