1 of 49
2 of 49
The chooses a sweet-and-sexy, off-the-shoulder Collette Dinnigan sheath, black pumps and glossy locks for a Munich photo call for her film The Vow.
3 of 49
The other singing diva named Jennifer turns up the heat in a draped, cinched black micromini, ankle-strap platform pumps and hoops for a Dallas signing of her book I Got This.
4 of 49
Supporting her favorite hairstylist, Ted Gibson, the attends his VIP salon preview in Fort Lauderdale, Fla., in a classic all-black ensemble – a cardigan, cropped pants and ballet flats.
5 of 49
Choosing a style that’s equal parts pretty and quirky, Carey wears a tulip-printed, ’40s-inspired Roland Mouret frock and blue pumps to the London Film Critics Circle Awards.
6 of 49
Revered for her famous features, the frames her buzzed-about face in a champagne sequin-and-crystal-adorned cowl-neck Jenny Packham gown and Amrapali jewels for the L.A. premiere of Underworld: Awakening.
7 of 49
The busy mom goes glam at the N.Y.C. premiere of her movie Man on a Ledge in an edgy black and gold one-shoulder Versace dress with H.Stern earrings, Ippolita ring, opaque tights and high-shine booties.
8 of 49
In another menswear-inspired turn, modernizes her tapered trousers with a silky button-down, striped belt and platform pumps at SiriusXM studios in N.Y.C.
9 of 49
steps out solo in a twirl-worthy black lace frock and nude pointy-toe heels for a Good Day L.A. appearance.
10 of 49
Hiding her perfect peepers behind a pair of sunnies, the supermodel trades her jeans for glossy leggings, a sequin-striped tee and glittering cap-toe pumps at Sao Paulo Fashion Week in Brazil.
11 of 49
The picks a demure Dolce & Gabbana silhouette paired with black tights and wedges for the Haywire N.Y.C. premiere.
12 of 49
Long a Rodarte fan, the young actress fetes the fashion line at an L.A. dinner in a pretty off-the-shoulder floral dress by the brand, lace-up booties and Van Cleef & Arpels gems.
13 of 49
Still down under for her Journey 2: The Mysterious Island promo tour, the looks summery as she strolls near Sydney’s Bondi Beach in a belted, ruffled orange maxi, RockLove jewelry, flip-flops and shades.
14 of 49
Also at the Rodarte dinner in L.A., shines in a yellow Stella McCartney jacket, brocade pants, Jimmy Choo sandals and Van Cleef & Arpels jewelry.
15 of 49
The (have you seen the previews for Underworld: Awakening?) looks the part in sexy leather leggings, massive platforms and an oversize blazer in L.A.
16 of 49
Continuing her stylish book tour for I Got This, stops by an Atlanta Weight Watchers in a belted blue-and-black dress, booties and crimped curls.
17 of 49
The supermodel channels a ’40s screen siren in a draped, asymmetrical dress, furry jacket, massive chandeliers and ruby-red lips for the reopening of 40/40 Club in N.Y.C.
18 of 49
Also at the Haywire N.Y.C. premiere, the actress gives her ruffled black Theyskens Theory dress a little edge with a tough-shouldered jacket, chain danglers by Amrapali and a zipper-trim Lauren Merkin clutch.
19 of 49
For her 40/40 Club entrance, the singer indulges in a little navel-gazing with her plunging keyhole-cutout silver gown and oversize hoops.
20 of 49
My Girl’s star hits the N.Y.C. Haywire premiere in a sparkling sequined Tommy Hilfiger mini and matching pumps.
21 of 49
After donning a lilac Gucci number at the Golden Globes, goes back to black-and-white, choosing a Jenni Kayne suit, Kate Spade New York sweater, Nicholai by Nicky Hilton ring and Jimmy Choo pumps for the launch of her eco-friendly baby product line, Honest.com.
22 of 49
The Aussie actress is ultraglam in a Givenchy by Riccardo Tisci halter satin peplum dress, plus black sandals and stacks of golden bangles, at watchmaker IWC’s Geneva event.
23 of 49
Hollywood’s busiest redhead makes an appearance outside the Late Show with David Letterman in N.Y.C., wearing a bright green sheath dress with orange Barbara Bui sling backs and Harry Winston jewelry.
24 of 49
Looking very petite at a Weight Watchers center in Chicago, the company’s signs copies of her book I Got This in a striped, belted Elizabeth and James mini and black booties.
25 of 49
Journey 2: The Mysterious Island’s poses pretty in Sydney, wearing a blue printed Bec & Bridge mini with a metallic belt and sandals, plus RockLove jewelry, at the film’s photo call.
26 of 49
Also at the IWC event, the supermodel plays peekaboo in a shoulder-baring, supershort white Kimberly Ovitz mini worn with sparkling Rene Caovilla sandals and a metallic clutch.
27 of 49
The shows off her funky style (and her even funkier new dip-dyed strands!) in Beverly Hills, tucking a crisp button-down into a pleated, printed mini.
28 of 49
Topping her flirty black dress and nude Brian Atwood pumps with an edgy leather-collar-and-buckle-clasp coat, the actress exits the BBC Radio 1 studios in London.
29 of 49
The stylist looks ready for spring as she stops for a java boost in West Hollywood in a printed knee-length Missoni sweater, trademark oversize shades and wide-brim hat.
30 of 49
Looking N.Y.C. chic for a night on the town, wears a slim black dress, glittering black jacket and bold red accessories at a Q&A for her film Haywire.
31 of 49
For the Sydney premiere of her film Journey 2: The Mysterious Island, has fun with fringe in a red Amanda Wakeley column gown with silvery accents and a metallic clutch, plus jewels by Sutra, Le Vian and Arunashi.
32 of 49
Hanging out in Hawaii, the surely stops traffic in a colorful bikini with a cutout salmon-pink mini and golden bangles.
33 of 49
Also pretty in pink (though slightly more covered up), visits the L.A. set of Extra in a vivid halter dress, sparkling Amrapali drop earrings and leg-lengthening nude platform pumps.
34 of 49
The Midnight in Paris star finds herself at a Cesar’s Revelations party in the French capital – her hometown – in a printed white Dior frock and black heels.
35 of 49
Still sporting her new blue do, strolls through LAX in a zigzag-print mini, pendant necklace and Brian Atwood pumps.
36 of 49
The star of the Golden Globes darling The Artist wears a bright orange suede Ralph Lauren Collection sheath with a stitched leather clutch and matching wood-heeled sandals in West Hollywood.
37 of 49
A far cry from her dramatic Hunger Games look, Elizabeth pairs a fur-trimmed Andrew Gn brocade trench with chill-fighting tights, Tabitha Simmons boots and Brumani earrings for a Late Show appearance in N.Y.C.
38 of 49
For a casual outing in London, the dons an emerald turtleneck with a rose-colored blazer and Paige flared denim.
39 of 49
Also in London, where she celebrated her 38th birthday on Jan. 16, the looks all business in gray trousers with a matching fur topper and cap-toe pumps.
40 of 49
The Hart of Dixie glimmers in an ethereal beaded party dress and shiny pumps – finished with a messy updo – at the Art of Elysium gala in Los Angeles on Saturday.
41 of 49
The spot-on continues her red carpet reign in a long-sleeved, color-blocked Lanvin cocktail dress with crystal detail at a W magazine pre-Globes bash Friday night.
42 of 49
Derek Jeter’s leading lady is anything but mellow at the Art of Elysium gala in a bright yellow Oscar de la Renta gown and Tiffany & Co. jewels.
43 of 49
Cougar Town’s funny sidekick (and Michelle Williams’s BFF) proves she has what it takes to be a leading lady, stealing the show at the Art of Elysium event in a sparkly, studded gown with sheer paneling.
44 of 49
The BET Honors hostess makes a splash in a form-fitting cocktail dress during a pre-party for the show in Washington, D.C., on Friday.
45 of 49
Adding a pop of neutral color to her typically black palette in a Lanvin frock with Brian Atwood slingbacks, The Girl with the Dragon Tattoo star looks ready for some fun at the AFI Awards in Los Angeles on Friday.
46 of 49
Flaunting her fabulous figure in a white Michael Kors column with black leather trim, the model mama makes quite an impression at the G’Day USA Los Angeles Gala in Hollywood on Saturday.
47 of 49
The leaves her new beau at home and flies solo, promoting her latest film, Journey 2: The Mysterious Island, in Sydney, Australia, wearing a one-shoulder cocktail dress by Zaeem Jamal.
48 of 49
Kelly proves she’s not just a beauty risk-taker – she’s a fashion risk-taker too, walking the red carpet at the Art of Elysium gala in a flowing black-and-gray Guishem dress with exaggerated sleeves.
49 of 49
Making a surprise appearance at the Cinema For Peace Ceremony in Los Angeles on Saturday, shines in a fitted, one-shoulder silver gown and ultra-long necklace.
Vote on Last Week’s Looks! >
Beyoncé Shows Off Her Toned Abs (and Ivy Park T-Shirt) in New Set of Fashion Instagram Photos
Kourtney Kardashian and Larsa Pippen Show Off Their Super-Toned Abs in Crop Tops
Justin Bieber Shows off His Massive New Torso Tattoo — and Fans Are Going Crazy
Gigi Hadid's Been Secretly Wearing Her Maybelline Makeup Collection for Weeks - Even Bella Didn't Know!
Hannah Montana Actor Mitchel Musso Reveals He's Still Ashamed of His Character's Fashion Choices in Hilarious Tweet