1 of 37
Is it Beyoncé or Sasha Fierce? The singer rocks a hard-edged look in a Gareth Pugh minidress and robotic glove at the 2008 MTV Europe Music Awards in Liverpool, England.
2 of 37
The star trades in her sexier dresses of late for a sleek and chic Giles Deacon charcoal sheath at the Rumble in the Jumble charity event in London.
3 of 37
The star takes a night off from daughter Harlow to fete Dsquared at L.A.’s Chateau Marmont in a floral gown from the Italian brand and shrunken leather jacket.
4 of 37
The Gossip Girl star is chic in head-to-toe Juicy Couture black – with a revealing back! – at the opening of the brand’s flagship boutique in N.Y.C.
5 of 37
Across town, Lively’s costar hosted the Lucky Shops event in floral ruffles by Marc Jacobs, Cartier jewels and gladiator sandals.
6 of 37
The singer makes a towering entrance into her London Hotel in platform Marni boots, skinny jeans and revealing tank top.
7 of 37
The heiress celebrates her role in Repo! The Genetic Opera in a silver python Voom by Joy Han minidress and matching heels at the film’s premiere in Las Vegas.
8 of 37
The singer shows her post-election patriotism in a Karen Zambos “vote” print dress while running errands in Los Angeles.
9 of 37
SARAH MICHELLE GELLAR
The actress turns up at the Juicy Couture store opening in a fuzzy faux-fur coat from the brand, black layers and funky sandals.
10 of 37
The Doubt star is enchanting in her crimson Lela Rose sheath and Cartier diamonds at the Motion Picture Club luncheon in Los Angeles.
11 of 37
The actress ditches her signature quirky style for a modern goddess gown at the DSquared event in Los Angeles.
12 of 37
EVA LONGORIA PARKER
Forget fall! The actress enjoys the warm weather in Los Angeles in a flowing red maxidress and metallic purse.
13 of 37
The newlywed looks radiant in a white corseted Dolce & Gabbana dress and Van Cleef & Arpels jewels for Michael J. Fox’s annual “A Funny Thing Happened on the Way to Cure Parkinson’s” fund-raiser event in N.Y.C.
14 of 37
After being fired from her event planning job, the Hills star makes a casual coffee run in dark shades, jeans and wedge boots in L.A.
15 of 37
The actress keeps it simple in an all-black belted look for the Parkinson’s benefit in N.Y.C.
16 of 37
The former Scary Spice is anything but in her glittering Jenny Packham halter gown and side-swept updo for the Cosmopolitan Ultimate Women of the Year Awards in London.
17 of 37
Getting into the L.A. groove, the British supermodel shows some leg in cut-off shorts, a swirling printed top, brown booties and a fringed bag while shopping Stateside.
18 of 37
Always the fashion risk-taker, the singer smiles in a flower sheath cinched with a peculiar belt for the MTV Europe Awards press conference in Liverpool.
19 of 37
The new Bond girl shows off a svelte figure in a body-hugging black Dolce & Gabbana gown for the Rome premiere of Quantum of Solace.
20 of 37
The star plays a sophisticated game of peekaboo in her lace-front corset Antonio Berardi dress and Chopard jewels at the Paris premiere of her film Two Lovers.
21 of 37
Voting with a smile! The Project Runway host votes in high-waisted jeans, a printed top and luxe tote in Beverly Hills.
22 of 37
The actress bundles up against the London chill in her fuzzy ivory coat and matching hat.
23 of 37
The actress votes in style, pairing her simple LBD with teal flats and a fringed Jimmy Choo purse.
24 of 37
The singer celebrates the release of her new album in London with a quirky printed dress that pays homage to the city – that’s the Queen’s face!
25 of 37
The singer tops her black and red outfit with a fun plaid cap while voting in Beverly Hills.
26 of 37
The rock spawn is elegant in her asymmetrical draped navy gown at the Vogue Fantastic Fashion Fantasy party in London.
27 of 37
The heiress gets into the election spirit in a blue star-printed Tracy Reese dress, matching Christian Louboutin pumps and Slane & Slane earrings for an appearance on The Late Show with David Letterman, where she promoted her new fragrance, Fairy Dust.
28 of 37
The designer tries to go incognito as she makes her way through London’s Heathrow airport in an all-black travel look.
29 of 37
The quirky actress keeps it simple in head-to-toe Balenciaga including a soft green baby-doll dress, strappy heels and clutch for the ACE Awards in New York.
30 of 37
Keeping up her fashionable bump style, the mom-to-be opts for a shimmering black Dolce & Gabbana dress under a black Pea in the Pod coat and matching booties for the Orphans Foundation Gala in N.Y.C.
31 of 37
The star relies on a simple little black Dolce & Gabbana dress and pumps for the Orphans Foundation Benefit Gala in New York City.
32 of 37
The singer hits a high note in a form-fitting teal and black Hérve Léger dress and golden platform sandals to promote her Samantha Thavasa handbag collection in Tokyo.
33 of 37
The Heroes star shakes things up in a black one-sleeve Kaufman Franco gown, accented at the shoulder with a bold platinum detail, with a matching Ferragamo clutch for the Alfred Mann Foundation Innovation and Inspiration Gala in L.A.
34 of 37
Looking downtown cool, the Broadway star hits New York’s city streets in a white button-down shirt, gray cardigan and black pencil skirt paired with stirrup tights and strappy sandals.
35 of 37
The Hills star balances sexy and sweet at the Lauren Conrad for TheQuad.com fashion tour in Atlanta wearing a belted cherry-red dress with a sweetheart neckline.
36 of 37
At a breakfast benefit for Malaria No More in L.A., the activist actress goes for a casual look in a gray sweater, worn-in jeans and knee-high boots.
37 of 37
Showing off her signature style at the Chi screening in L.A., the Gossip Girl star is elegant in a simple black Shoshanna sheath accented at the collar with matte gold pailettes.