In coordinated black outfits, Kristen Stewart and Robert Pattinson step out for the hit film's London premiere. Plus: Britney Spears, Taylor Momsen and more

THE BIG CHILL

Michelle Williams gets a grip on her bundled-up daughter Matilda, 3, during a stroll Tuesday through their Brooklyn, N.Y., neighborhood. Earlier in the day, the actress received good news: She was nominated for Film International's Independent's Spirit Award for her role in the drama Wendy and Lucy.