Michelle Williams looked absolutely stunning at the premiere of My Week with Marilyn at Roppongi Hills in Tokyo, Japan, today. 

OK! GALLERY: MICHELLE WILLIAMS, GWYNETH PALTROW & MORE WOW ON THE RED CARPET AT THE 2012 ACADEMY AWARDS! 

The actress, who won a Golden Globe for her portrayal of Marilyn Monroe in the film, channeled her idol on the red carpet in a gorgeous white Alexander McQueen gown. 

OK! NEWS: MATILDA GETS LUNCH WITH MOM MICHELLE WILLIAMS — SHE LOOKS JUST LIKE DAD HEATH LEDGER! 

Michelle has said that she's set to take a break from acting after promotion for the movie ends, confessing that she's looking forward to going back to being a full-time mommy to daughter Matilida.