1 of 44
The jewelry epitomizes casually chic style, pairing her comfy leggings and scarf with a bold-shoulder blazer and eye-catching boots while out in L.A.
2 of 44
The lets her ruby engagement ring be her only pop of color, layering an oversized gray cardigan over black tights and boots in N.Y.C.
3 of 44
Could that be one of her 30 Chanel purses? The stylish looks retro-chic in cat-eye shades, a scarf-and-cardigan combo, and tights underneath her cutoffs while out in West Hollywood.
4 of 44
The is a mix-master in a striped Alice + Olivia by Stacey Bendet dress and violet peep toes at her SoBe Lifewater event in New York.
5 of 44
Maternity wear? Hardly! The actress, who is expecting her third child, looks elegant in a draped Lanvin dove-gray gown with delicate necklaces for the Chicago premiere of her comedy The Dilemma.
6 of 44
The star stays warm – but still bares a little skin – in a black turtleneck dress with cut-out detailing and black platform booties at the N.Y.C. premiere of Blood from a Stone.
7 of 44
8 of 44
indulges her love of retro silhouettes in a vintage velvet Jean Patou Couture dress and classic pumps at the premiere of her new movie, The Dilemma, in Chicago.
9 of 44
The stays on-trend, accenting an easy look with a chain-strap bag, ankle booties and a warm topper, while out and about in L.A.
10 of 44
makes a bright entrance in a strapless Jil Sander frock with gathered hem, Jack Vartanian earrings and a bold Lucifer vir Honestus ring at CoverGirl’s 50th anniversary party in West Hollywood, Calif.
11 of 44
The is all smiles at the People’s Choice Awards in L.A. wearing a ruffled chiffon number by Irina Shabayeva with a flowing train, Isharya gold hoops and platform peep toes.
12 of 44
The newly single makes a bold statement in her sequined Mark+James by Badgley Mischka LBD, Neil Lane jewelry and signature ruby lips at the CoverGirl bash in West Hollywood.
13 of 44
The has a regal presence, playing People’s Choice Awards hostess in a fuchsia Edition by Georges Chakra column gown.
14 of 44
shows off her effortless California style in an ivory Quail wrap dress with batwing sleeves, paired with Dana Rebecca Designs bracelets and nude Jimmy Choo sandals at CoverGirl’s 50th birthday bash in West Hollywood.
15 of 44
Emmy stays citrus bright, accessorizing her chiffon dress with gold Coomi chandelier earrings and demure pumps, for an appearance on Late Night with Jimmy Fallon in New York.
16 of 44
accents her vintage What Goes Around Comes Around gown with spotlight-stealing Sergio Rossi sandals, a BaubleBar bracelet and Irit design ring at CoverGirl’s 50th birthday celebration in West Hollywood.
17 of 44
The starlet pumps up a classic sequined Nicole Miller shift with platforms and Ippolita jewelry at the People’s Choice Awards in Los Angeles.
18 of 44
stays chic in black-and-white, including a Lauren Merkin clutch, at the TCA winter press tour reception in Pasadena, Calif.
19 of 44
The actress cuts a sexy figure in a Pamella Roland mini, strappy Jimmy Choo sandals and Vhernier jewelry at CoverGirl’s anniversary celebration in West Hollywood, Calif.
20 of 44
Looking sweet in her printed Missoni dress, Proenza Schouler tote and lace-up booties, the Herbal Essences attends an event for the brand in L.A.
21 of 44
22 of 44
Another new bride-to-be, the is fresh-faced and dressed-down at New York’s JFK airport in layered sweatshirts, a cozy olive duster and her favorite oversized leopard tote.
23 of 44
We’d hate to see those tan lines! The flaunts her figure in a see-through white ensemble with strategic black accents while vacationing in St. Barts.
24 of 44
Look out, Jay-Z – your is surrounding herself with studs! The singer rocks studded E-label leggings, a leather jacket and a Wildfox T-shirt for a biker-chic look in N.Y.C.
25 of 44
The Black Swan star trades her pointe shoes for flat boots, American Eagle jeggings and a cozy cowlneck while running errands in L.A.
26 of 44
She’s Supreme-ly gorgeous! The R&B star channels Diana Ross in a plunging, sequin-and-feather concoction, dazzling diamonds and a retro-inspired bob for a Late Show With David Letterman performance.
27 of 44
The dance diva makes the rounds in N.Y.C. promoting her new show, Live to Dance, in a curve-hugging sheath, black platform pumps and a shiny black puffer with fuzzy trim.
28 of 44
The actress tries the trends in a sheer, sequined top and second-skin jeggings A|X combo with a Treesje purse and Flutter by Jill Golden jewelry at the premiere of The Cape in L.A.
29 of 44
The Country Strong braves the N.Y.C. chill in an oversized overcoat with a sumptuous fur collar, matte tights and utilitarian booties for an appearance on Good Morning America.
30 of 44
The reality heads to an N.Y.C. salon in a drapey leather jacket, second skin leggings, an easy T-shirt and over-the-knee boots.
31 of 44
The newly engaged keeps it casual in a charcoal pea coat, basic denim and cognac knee-high boots while visiting with friends in Santa Monica, Calif.
32 of 44
The Live to Dance star struts her stuff in a pleated silk mini dress with a sweetheart neckline and mega platforms for an appearance on the Late Show with David Letterman.
33 of 44
The jewelry designer pairs a black petticoat with stretchy separates and a monochromatic skull cap while shopping in L.A.
34 of 44
The True Blood actress multi-tasks in multi trends, hitting a Beverly Hills hair salon in a gray military coat, black lace prairie skirt and ballet flats.
35 of 44
shows her Vegas LOVE, ushering in the new year in a high-shine ombré Hervé Leger bandage dress and metallic peep toes.
36 of 44
Also in Sin City: A glamorous , who sparkles in a plunging white mini dress by Marc Bouwer and captoe heels to welcome 2011.
37 of 44
Who says you have to rock bling on New Year’s? The wears a demure white short-sleeved frock and basic black pumps to the star-studded Jay-Z and Coldplay concert at the Cosmopolitan Hotel in Las Vegas.
38 of 44
The swaps her swimwear for see-through stripes and a statement necklace at while hosting a New Year’s bash at Pure nightclub in Las Vegas.
39 of 44
The actress plays hostess to Trident Vitality’s New Years Eve Bash at Miami’s Mondrian Hotel in a mix of textures and prints, donning a ruffled checked number and simple black booties.
40 of 44
The Office actress looks ready to party, accessorizing her embroidered Farah Khan frock with a feathered purse gladiator heels and Anita Ko bracelets at the star-studded grand opening of The Cosmpolitan in Las Vegas.
41 of 44
The City gives ‘em the bold shoulder in a metallic sea green mini, funky medallion necklace and Lauren Merkin’s “Iris” clutch at the Jay-Z and Coldplay New Year’s concert in Las Vegas.
42 of 44
Also at the concert, the Grey’s Anatomy trades scrubs for a sexy suit, rocking blunt new bangs and not much else beneath her tuxedo jacket.
43 of 44
Emmy opts for a minimalist nude Bottega Veneta sheath, paired with strappy sandals, Coomi earrings and a metallic Swarovski clutch for her New Year’s Eve celebration at The Cosmpolitan in Las Vegas.
44 of 44
Drama mama! The reality star goes for maximum impact in a striking teal goddess gown by Bodyamr with a train, Sylvia Toledano clutch and glam metallic ankle-strap sandals at the Mondrian Hotel in Miami.
Vote on Last Week’s Looks! >
Husband and Wife! See Michael Fassbender and Alicia Vikander's Wedding Bands
Love Her Outfit: Star Style To Steal
Here's How Much Joe Jonas Spent on Sophie Turner's Engagement Ring, According to 3 Experts