The separated couple go on a Halloween hunt. Plus: Jen & Vince, Charlize Theron, Kelly Clarkson and more

SUPER MOM

Uma Thurman makes a play date with ex-husband Ethan Hawke and their children, Roan, 3, and Maya, 7, on the set of her movie Super Ex-Girlfriend in New York City. Don't be fooled by the actress's dowdy wardrobe: She's going incognito as a superhero who makes life hell for the guy who dumped her (Luke Wilson).