Public Enemies, Michael Mann’s gangster biopic on notorious Depression-era outlaw John Dillinger, made its world premiere at the Los Angeles Film Festival Tuesday night. Oscar-winning actress Marion Cotillard, who stars as the love interest of Dillinger (played by Johnny Depp), looked dangerously chic in a silk-crepe mosaic-print number and blue python clutch from Elie Saab’s ready-to-wear fall 2009 collection.

Paper Man, in which Jeff Daniels plays a frustrated middle-aged novelist who strikes up an unlikely friendship with a teenage girl, made its world premiere at the opening night of Film Independent’s Los Angeles Film Festival Thursday night. Among the boldface names who turned out for the event, at Westwood’s Mann Village theater, were Robert Downey Jr., Dermot Mulroney (whose brother Kieran co-directed the film), and Christina Ricci, who looked every bit the indie-film queen in a breezy lavender frock.

In Cheri, the upcoming film adaptation of French writer Colette’s 1920s novel of the same name, Michelle Pfeiffer plays a notorious seductress who romances the young son of her courtesan arch rival. At a recent Cinema Society screening of the highly anticipated period drama, which sees Pfeiffer reuniting with Dangerous Liaisons director Stephen Frears, the actress turned heads in an elegant white shift and silver peep-toe pumps.

The Council of Fashion Designers of America held its 2009 awards ceremony at New York’s Lincoln Center for the Performing Arts Monday night. Top honors went to Proenza Schouler’s Jack McCullough and Lazaro Hernandez for accessories, Band of Outsiders’ Scott Sternberg and Calvin Klein’s Italo Zucchelli (a tie) for menswear, and Rodarte’s Kate and Laura Mulleavy for womenswear. On the red carpet, Spiderman star Kirsten Dunst stole the spotlight in a gray hand-marbled silk chiffon and tulle minidress by the winning sisters, which she paired with gray patent buckle sandals by Nicholas Kirkwood.

Eva Mendes served as charity ambassador for Cartier’s fourth annual Love Day to benefit the Art of Elysium, a nonprofit organization that invites actors, artists, and musicians to spend time with children fighting serious medical conditions. Mendes introduced the new Cartier Love Charity bracelet, a blue silk cord that clasps with a miniature 18K rose gold bracelet bearing an inset diamond. The actress, who hit a sartorial high note in a metallic Michael Kors sheath dress, is reportedly set to star as renowned soprano Maria Callas in the forthcoming film Greek Fire.

The Black Eyed Peas’ fashionable front woman, Fergie, joined band mates Will.I.Am and Taboo at a bash honoring their new release, The E.N.D., hosted by Target at New York nightspot the Griffin (Rihanna also turned out for the celebration). Mrs. Josh Duhamel turned heads in a strapless metallic cocktail frock, cinched with a black patent corset.

In The Proposal, which opens next week, Sandra Bullock plays a demanding publishing exec who forces her assistant (Ryan Reynolds) into marriage in order to keep her Visa status. Bullock opted for office-appropriate pinstripes when she appeared on the Late Show with David Letterman Monday night to promote the workplace-set rom-com. (And we’d surely give her a promotion for those Azzedine Alaïa platforms.) Do you identify with Bullock's high-powered film heroine, or is there another leading lady who suits your style?

Megan Fox, ELLE’s June cover girl, joined costar Shia LaBeouf at the Transformers: Revenge of the Fallen world premiere at Roppongi Hills in Tokyo today. The brunette stunner, who reprises her role as LaBeouf’s love interest, Mikaela Banes, was a red-carpet hit in an eye-popping purple gown and indigo suede platforms by Stuart Weitzman.

At the Mexico premiere of Star Trek, star Zoe Saldana looked anything but the sci-fi geek in a sophisticated strapless ivory leather number by Bottega Veneta, which she paired with black patent “Maniac” pumps from Brian Atwood’s FW09 collection. The actress, who looked similarly stunning in Azzedine Alaia at Star Trek’s London premiere, has us admiring her red-carpet choices with Trekkie-like devotion.

Todd Phillips’ Vegas-set comedy The Hangover follows the high jinks that ensue after a night of debauchery that involves three groomsmen losing their pal on the eve of his nuptials. At the movie’s Los Angeles premiere last night, star Justin Bartha was joined by girlfriend Ashley Olsen, who wore an elegant black slip dress by Calvin Klein Collection. The diminutive blonde recently announced plans to put her acting career aside to focus on fashion.