1 of 50
The New Girl best actress nominee prepares to party at the Emmys in a leaf-print red Nina Ricci mini and her signature black tights at a pre-Emmy bash held by Variety in Beverly Hills.
2 of 50
Also nominated for her role on Homeland, the toasts the show’s success at a Showtime party in West Hollywood, wearing a slim blue sheath with an embellished neckline and black Christian Louboutin pumps.
3 of 50
A nominee for Mad Men, the redheaded stunner goes for sexy black lace, accented by a Jimmy Choo clutch and bow-topped pumps, at the Variety party in Beverly Hills.
4 of 50
In a look that’s part demure, part risk-taking, the star strikes a pose in a sheer-skirted Dior dress, suede sandals and a glittery clutch (both by Jimmy Choo) for the Entertainment Weekly pre-Emmys bash in West Hollywood.
5 of 50
The knows how to rock a Valentino dress – in fact, she’ll also be spotted in the designer’s creation on her wedding day! For the New York City Ballet fall gala, she pairs her romantic, flowered Valentino Haute Couture gown with a Roger Vivier clutch
6 of 50
Proving that a moto jacket really is one of the most versatile pieces in a woman’s wardrobe, the X Factor judge pairs hers with a shorts ensemble and massive platform pumps to visit the Young Women’s Leadership School in N.Y.C.
7 of 50
After first rocking a pantless tuxedo jacket look, the gives menswear another go in an oversize boyfriend blazer with a slim-fitting ivory mini and sexy crisscross sandals for a QuickTrim event in Sydney.
8 of 50
SARAH JESSICA PARKER
Also in a glamorous, romantic floral Valentino Haute Couture gown and cape (worn with flower-motif Fred Leighton jewels, Christian Louboutin heels and a large purple rosette in her hair), the makes a sweeping entrance at the N.Y.C. Ballet gala.
9 of 50
10 of 50
Continuing her whirlwind denim tour, the star rocks foiled lace-print Paige skinnies with an embellished black top, drop earrings and crimped locks at the PEOPLE StyleWatch and Guess denim party celebrating the magazine’s October issue at West Hollywood’s Palihouse.
11 of 50
The pretty details on Jessica’s peony-pink Roksanda Illincic sheath, worn with Christian Louboutin pumps to the opening night of the off-Broadway play If There Is I Haven’t Found It Yet in N.Y.C., make an otherwise simple dress look special
12 of 50
A simple black-and-white print gets a sexy edge from a plunging keyhole cutout. The actress wears her daring dress with a barrel clutch and red lips to the Urbanworld Film Festival screening of Being Mary Jane in N.Y.C.
13 of 50
The Mad Men star (and world’s best dressed 12-year-old) once again inspires wardrobe envy in her A-line pastel Oscar de la Renta dress and bow-topped kitten heels, worn to theEmmy Awards writers’ nominee reception in North Hollywood.
14 of 50
Also celebrating her favorite skinnies at the PEOPLE StyleWatch and Guess denim party in West Hollywood, Katie tops hers with a loose yellow blazer, leopard belt and red heels, plus a Devi Kroell clutch and chic ombré strands.
15 of 50
16 of 50
The world’s best dressed lives up to the title in a fitted white long-sleeve dress and black pumps at a Barack Obama fund-raiser in London.
17 of 50
The singer shows off her toned legs in leather shorts teamed with a graphic shirt, fingerless gloves and cap-toe heels at the Sundance Channel’s All On the Line with Joe Zee party in West Hollywood.
18 of 50
Flaunting a super-svelte shape, the actress stuns in a red silk draped Roksanda Ilincic gown with Fred Leighton gems, nude Casadei platforms and a gold purse at the Trouble with the Curve premiere in Westwood, Calif.
19 of 50
LANA DEL REY
The new face of H&M trades in her signature retro duds for a more sophisticated style, rocking a black mini with a sheer overlay, plus a tuxedo jacket and ankle-strap heels at the brand’s launch party in New York City.
20 of 50
At the Annual Brazil Foundation Gala Party in N.Y.C., the fashionista goes ethereal in a floral-embroidered sheer nude gown and copper clutch, both by Valentino.
21 of 50
We’d gladly steal the Revenge star’s simple, yet stylish All on the Line with Joe Zee party look from head-to-toe – including the on-trend peplum top, sexy pumps and funky Union Jack clutch.
22 of 50
The enhances her assets in a low-cut maroon-and-blue Roland Mouret dress, coordinating bow-accented platforms and a wine-stained lip at a Savages photo call in London.
23 of 50
The also stops by the All on the Line with Joe Zee party in an LBD (love the pockets!), metallic heels and orange pout for a fun pop of color.
24 of 50
Did Hailee pick up some new style moves while attending all those shows during Fashion Week? The young star mixes a colorful Mary Katrantzou skirt and a fun sunglass-printed T-shirt with metallic T-strap Brian Atwood heels at Joe Zee’s bash.
25 of 50
Proof that the empire is conquering the world: They’re even Keeping Up Down Under. The star promotes the show in Sydney wearing a textured gunmetal Vera Wang sheath, matching accessories and a super-high topknot.
26 of 50
In yet another head-turning LBD, the actress shows off her shape in a V-neck dress and bold accessories (all by Alexander McQueen), plus jewels by Pearl Collective and House of Lavande Vintage, worn to a Conde Nast Traveler party in N.Y.C.
27 of 50
If the thought of putting away your summer minis is making you depressed, take a cue from Sophia, who celebrates her new show Partners in West Hollywood in a fall-appropriate sheath with a short hemline. Classic black accessories (including an Edie Parker clutch) and a House of Lavande Vintage necklace with autumnal tones keep the look transitional.
28 of 50
At the same West Hollywood CBS bash, the cohost of The Talk livens things up with a bold red-and-blue color scheme, as seen on her sapphire mini and her crimson accessories and lips.
29 of 50
Menswear continues to have a major moment. This time we spotted the trend on the supermodel, who steps out in a brocade tux-inspired Stella McCartney look, funky heels and an Edie Parker clutch for the Conde Nast Traveler party in N.Y.C.
30 of 50
It takes a real diva to pull off head-to-toe sequins. Kylie finishes her sparkling black Dolce & Gabbana gown with De Beers diamonds and a smoky eye at the London premiere of Holy Motors.
31 of 50
What’s black and white and red all over? The How I Met Your Mother star’s super-simple, yet super-impactful Temperley London look at the West Hollywood CBS bash.
32 of 50
The indie star brings plenty of sex appeal to the N.Y.C. Dredd: 3D premiere in a spaghetti-strap, lingerie-inspired Vena Cava gown, plus a tiny Lena Erziak minaudière and an A.L.C. bracelet.
33 of 50
Her End of Watch cueball haircut may have been the style focus of the film, but takes back the spotlight in a draped peplum teal Rachel Roy dress, Lorraine Schwartz jewels and elegant updo at the L.A. premiere.
34 of 50
Crossing the pond for London Fashion Week, the socialite brings her signature bold style to the Anya Hindmarch show, mixing an emerald blazer with goldenrod skinnies, plus sparkly jewels.
35 of 50
Also at the End of Watch premiere in L.A., the actress shows off her new shape in a Jay Godfrey for Nordstrom faux-leather mini and black pumps.
36 of 50
LANA DEL REY
Mulberry’s muse totes her eponymous satchel to the line’s London Fashion Week show, wearing an atypically low-key white sheath with nude heels (both by Mulberry) and delicate jewels.
37 of 50
Does this mean double-slit gowns are a thing now? uses hers to full effect, showing off her legs in a breezy black halter paired with a long pendant at the L.A. End of Watch premiere.
38 of 50
A bunch of statement pieces – chandelier earrings, sharp necklace, glittery skirt, oversize clutch – add up to one eye-catching ensemble on the Cougar Town star at the L.A. End of Watch premiere.
39 of 50
Another star giving more than one fall trend a try, the singer stops by SiriusXM in N.Y.C. in a peplum cap-sleeve top, leather flounced skirt, boots and giant hoops.
40 of 50
Also walking the red carpet in L.A. for End of Watch, Anna goes for a more dressed-up look in a two-tone Elie Saab gown and Karine Sultan choker (only $28.50!).
41 of 50
Her style is evolving on TV – and life seems to be imitating art! The Glee celebrates the launch of Sony X Headphones with Nylon in Beverly Hills wearing a printed one-shoulder Naeem Khan gown with Allia earrings, an Arunashi ring and complementary peep-toes.
42 of 50
made 10 wardrobe changes at the ALMA Awards in Pasadena, Calif., (two more than she did at last year’s celebration!), but this is definitely one of the sexiest: a strapless Alberta Ferretti gown with sheer panels, plus Martin Katz Asscher cut diamond stud earrings.
43 of 50
Someone’s certainly stepping out of her comfort zone, though we’re not sure how comfortable we are with the look. The Mad Men actress selects a flowery Jenny Packham creation, Jimmy Choo heels, Norman Silverman diamonds (including a $600,000 ring!) and a red lip for the 2012 Primetime Creative Arts Emmy Awards in L.A.
44 of 50
also dares to bare some skin at the ALMAs, working a black, sheer-on-top embroidered Mathieu Mirano gown, finished with a statement ring, a simple clutch, slick hair and smoky eyes.
45 of 50
The fashion chooses to go girlie for her appearance at the ALMAs, selecting a plunging, belted pink Gucci gown with ruffle detail, one-of-a-kind Irene Neuwirth gems and Brian Atwood shoes.
46 of 50
We want just about every item in this photo. Starting with the actress’s ASOS leather pencil skirt, the crisp white blazer and those modern sandals, worn at the London photo call for her film Liberal Arts.
47 of 50
Is this part of her new, toned-down makeover? The strikes a more refined note in her black lace Michael Kors gown, Christian Louboutin heels, Neil Lane jewels and Judith Leiber clutch at the ALMA Awards in Pasadena, Calif.
48 of 50
For an L.A. Power of Youth event, embraces hers in a fun and flirty peach Moschino mini, plus tan pumps and a pinned-up lob.
49 of 50
Another star loving black and white for fall, steps out in a feminine A-line dress and black peep-toes at the Savages photo call in Paris.
50 of 50
Also at the ALMAs, the opts for classic elegance in a draped navy chiffon Carlos Miele gown, accented with Lorraine Schwartz sparklers and red lips.
Rashida Jones on Launching a Jewelry Line: ‘It Was Like Producing, But Without Having to Do Detail Work’
Lady Gaga Gets Matching 'Joanne' Tattoo with Her Father
Vince Vaughn Explains Why Shaving His Head Was 'Emotional'
Nicole Kidman's Daughters Were Shocked by Her 'Style Icon' Designation at the InStyle Awards
WATCH AND SHOP: This Weekender Bag Can Fit 2 Weeks Worth of Clothes