Hailee Steinfeld

When US Vogue and MAC Cosmetics host a dinner for Prabal Gurung, it's safe to assume the guest list is a pretty stylish set. That was the case at Chateau Marmont last night in LA, where the fashion crowd gathered to toast the designer clad in — what else? — a line-up of gorgeous Prabal Gurung looks. Diane Kruger made her way inside with beau Joshua Jackson, all while showing a little midriff in a solid crop top and a bold pair of printed pants. Ginnifer Goodwin hung with the designer du jour in a perfect metallic party dress, and Zoe Saldana showed her love for Prabal in a look from the Fall '13 collection. For a look at all of American Vogue's dinner guests — and what they're wearing — just keep clicking.

We have the third annual CinemaCon to thank for bringing together some of our favourite stars in one place: Las Vegas. Sandra Bullock, Elizabeth Banks, and Hailee Steinfeld are just three of the style-setters who made up this year's list of attendees — and we're looking to their dressed-up looks for serious cocktail-party inspiration. Without further ado, step inside to see who wore what at this year's CinemaCon.

January Jones, Katy Perry, and Sophia Bush made up only a fraction of the star-studded crowd at Coach's third annual Evening of Cocktails and Shopping last night. And, in effect, the brightly coloured separates, boldly printed pants, downright flirty floral dresses, and covet-worthy accessories to hit the red carpet — make that a grass-covered one — provided a surplus of styling inspiration. Whether you're more of a blazer-for-all-seasons girl (look to Nikki Reed) or partial to a colour-blocked cocktail dress moment (hello, Sophia Bush), this benefit bash certainly had enough ensembles to keep even the most finicky of style setters happy. Click on for the complete who-wore-what rundown, including looks we want to steal from Kate Mara, Hailee Steinfeld, Milla Jovovich, and Chloë Sevigny.

Louis Vuitton's Spring 2013 collection, inspired by the '60s Edie Sedgwick vibe, is the sole reason why everyone, especially our favourite celebrities, are sporting graphic, retro-inspired checks right now. The bold collection of mod shifts and sheaths has appeared (so far) on Jessica Alba, Miranda Kerr, Kate Upton, Kirsten Dunst, Kerry Washington, Kristen Stewart, and Hailee Steinfeld (phew!) — and all these trendsetters have adapted the runway looks with their respective styling twists. We promise, it won't be easy to choose a favourite — they all make the bold pattern look modern and chic. Click on to get a closer glimpse of all the Louis Vuitton-clad ladies, then let it inspire you to mix checkers into yournew season style.

Milan Fashion Week wraps tomorrow, but before we move on to Paris, let's take in all the glamorous looks from the front-row fashion pack. Most recently, we spotted Ashley Greene looking cool in an icy-hued ensemble at the Salvatore Ferragamo show. Before that, Olivia Palermo made a posh arrival at Roberto Cavalli in a fur collar, printed coat, and black leather pants, while Fergie made her way to Giorgio Armani's show in a white suit. Step inside to see all the celebrities lining MFW's front rows.

Milan Fashion Week kicked off earlier this week, and we have already been inundated with an array of glamorous looks from the front-row fashion pack. Most recently, we've spotted Olivia Palermo making a posh arrival at Roberto Cavalli in a fur collar, printed coat, and black leather pants. Before that, at the Vogue Talents party held at the Palazzo Morando, Jessica Stam, Anna Dello Russo, and Anna Wintour all looked exquisite during their night on the town. Jessica went the menswear route complete with a bow tie, while both Annas embraced their love of prints. Step inside to see all the celebrities lining MFW's front rows thus far.

Without a doubt, Paris Couture Fashion Week supplied a steady stream of enviable fashionista sightings, all worth a second glance. Among the mix: Diane Kruger, Hailee Steinfeld, Jessica Alba, and Carine Roitfeld turned out some of the sleekest front-row ensembles, despite wintry conditions — care of Chanel, Valentino, Christian Dior, Elie Saab, and more.

If the chic arrivals didn't provide all the styling fodder you need for your next cocktail party, then look to last night's glamorous Sidaction Gala for another round of inspiration. The fete marked the unofficial end of Couture Week but clearly did not mark the end of the A-list style parade. Leelee Sobieski stole our hearts in a bold floral-printed Christian Dior Spring '13 number, while Miroslava Duma continued her cool-girl reign in a masculine Giorgio Armani getup. Click through for all of the Sidaction Gala outfits, then catch up on all the best front-row moments from Paris Couture Fashion Week. — Additional reporting by Marisa Tom

Paris Couture Fashion Week continues to attract the most enviable fashionistas, and the latest to claim their front-row seats were Carine Roitfeld, Miroslava Duma, Natalia Vodianova, and Dita Von Teese at Valentino and Elie Saab. Chanel's Haute Couture Spring '13 show at the Grand Palais also drew the likes of Diane Kruger, Hailee Steinfeld, and Jessica Alba (all clad in Chanel, of course). Meanwhile, Rita Ora, Clémence Poésy, and, editrix in chief Anna Wintour all turned out equally covet-worthy ensembles, some more fur and snakeskin laden than others — we're looking at you, Anna. With Paris Couture Fashion Week forging ahead and our first Kim Kardashian sighting at Stephane Rolland, step inside to get a closer look at what everyone is wearing. Stay tuned for even more stunning arrivals to Paris Couture Fashion Week! — Additional reporting by Marisa Tom