Best Fashion Fetes

" Marc Jacobs is a genius!" declared Victoria Beckham (in Marc Jacobs) at the 2008 CFDA (Council of Fashion Designers of America) Awards, held at the New York Public Library in the heart of the fashion capital. Among the other famous fans who came out for the style soiree were Hilary Duff, Eva Mendes and Eva Longoria Parker. And with their favorite designers by their sides, one thing was certain—everyone made the best dressed list.

Jessica Szohr

, Blake Lively and Penn Badgley mingled with some real life gossip girls at the grand opening party for Juicy Couture's fifth Avenue flagship store in New York City. "They're so cute. Mostly they want to take a picture with me and they want me to tell them what Chace Crawford is really like," Szohr said of the Upper East Side teens who flooded in to get a first look at the label's new digs. And while navigating the sea of fans may have been a little complicated, the comfy clothes weren't. "I changed into this on the way here from another event and I hadn't even tried it on," Szohr said of her green frock. "That's what I love about Juicy-it's so easy!"

Prada played host to a bevy of Beverly Hills fashionistas, art fans and actors when they opened their Rodeo Drive epicenter for a private screening of Trembled Blossoms, the design line's first animated short film. Between showings, guests like Nicole Richie, Brooke Shields and Jenna Elfman kicked up their Prada heels against a backdrop of ink-drawn flowers and nymphs as L.A. nightlife king Brent Bolthouse played DJ. "I’ve loved Prada since I was 15 years old," said new mom Richie (in sister label Miu Miu) of her lifelong obsession. "I love Prada!"

An epic red carpet and plenty of Hollywood stars and fashion world insiders helped transform the famous steps of New York City's Metropolitan Museum of Art into a star-studded runway for the annual Costume Institute Gala. Modern style icons like Victoria Beckham, Beyonce and Jennifer Lopez struck their best poses as they made their way inside for some hero worship, celebrating the opening of Superheroes: Fashion and Fantasy. Even Tom Cruise turned fashion critic for the evening, admiring wife Katie Holmes's Armani gown. "Beautiful!" the leading man declared.

"I know what happens, so I'm not really missing anything," said Leighton Meester, who skipped an evening at home watching Gossip Girlto help fashion house Yves Saint Laurent celebrate its partnership with New York's Metropolitan Opera House at the opening night gala performance of Donizetti's La Fille du Régiment. But Meester's evening was right out of a GG script: The actress joined Emmy Rossum, Eva Mendes and Naomi Campbell for an evening of cuisine and culture that wasn't considered officially over until the last glass of Louis Roederer champagne was empty.

"We don't need art, but we cannot live without it," declared Karl Lagerfeld at the opening of Chanel's Mobile Art pavilion in New York City's Central Park. Sarah Jessica Parker, Kate Bosworth and Eve were among the designer's devotees who made their way inside artist Zaha Hadid's extra-terrestrial modular museum to get a first look at installations inspired by Chanel's iconic 2.55 quilted handbag. "It's hard to deny the perfection of the Chanel bag," sighed Parker, who posed next to artist Sylvie Fleury's larger-than-life rendering of the iconic purse-which contained an oversized Chanel compact. Like many of her fellow guests, the Sex and The City star donned the label just for the occasion.

Golden girl Kate Hudson kicked up her heels during Dolce & Gabbana's Dolce Vita party at the Cannes Film Festival. Joining Hudson-who wore a short and sexy Dolce & Gabbana dress made just for her by the designers and two Bulgari diamond bracelets-in the VIP area at Riviera hot spot Baoli were Rose McGowan, Lindsay Lohan and Milla Jovovich.

Eva Mendes

, Brooke Shields and other stars from the worlds of film and fashion came together to fete Calvin Klein’s 40th anniversary during New York Fashion Week. The one-of-a-kind event was held in a space that hasn't been open to the public in decades-an elevated railroad structure in the West 30s known as the High Line, which will soon become a park for New Yorkers. Halle Berry-who arrived on the arm of model boyfriend Gabriel Aubry-showed off her post-baby body in a slinky design from the line.

Calvin Klein's Francisco Costa and Ashley Olsen (in Calvin Klein) were among the fashion elite who gathered at Cipriani Wall Street for Fashion Group International's 25th annual Night of Stars gala in New York City. While Blake Lively and Penn Badgley mingled over cocktails, Jennifer Lopez, Debra Messing and Kate Bostworth were style-struck by honorees Donatella Versace, Christian Louboutin and Christoper Bailey