Photo: Getty Images  
Michelle Williams had a Marilyn moment of her own when she stopped by  “The Tonight Show with Jay Leno” last week, turning heads in a smart and  chic Jason Wu frock as she promoted her new Monroe biopic, My Week With  Marilyn. Williams charmed the audience with tales of how she prepared  for the role of the troubled 1950s sex symbol, and her outfit was just  as praiseworthy as her convincing performance in the film. The actress looked clean-cut in a stunning peplum dress from 
Jason Wu’s Spring 2012 collection,  paired with Fendi patent leather bow-front pumps. Williams wore minimal  accessories and let the Swarovski elements on her dress provide all the  sparkle and shine. Her makeup was sweet and simple as well: a berry  color on her lips and orange polish on her fingernails. A touch of heavy  mascara on her lashes added a bit of boldness. Get a similar classic  and polished look with these pieces:   	
 Photo: Courtesy of Shopbop   Girl. by Band of Outsiders colorblock dress, $525.  	

 Photo: Courtesy of Bergdorf Goodman  Marc by Marc Jacobs polka-dot silk dress, $398.  	

 Photo: Courtesy of Endless  Stuart Weitzman bowright pump, $199.30.  	

 Photo: Courtesy of Endless  DV by Dolce Vita Scarlett platform pump, $84.55.  	

 Photo: Courtesy of DSW  Via Spiga Mica pump, $110.  	

 Photo: Courtesy of Deborah Lippmann  Deborah Lippmann Lara’s theme nail polish, $16. 

 Photo: Courtesy of Nordstrom  Essie Capri nail polish, $8.  	

 Photo: Courtesy of Bloomingdale's  Yves Saint Laurent faux cils shocking volume effect mascara, $30. 

 Photo: Courtesy of Nars  Nars velvet matte lip pencil, $24.