Gyllenhaal and Witherspoon keep close during a stroll in Madrid, Spain. Plus: Katy Perry, Hugh Jackman, Lindsay Lohan and more

ON THE 'CUFF'

Now that's an arresting development! Blake Lively prepares to take a ride downtown, falling into police custody while filming a scene as Gossip Girl's Serena van der Woodsen on location in New York City on Tuesday.