Now in Milan, the well-dressed duo step out together at a press event. Plus: Ashlee Simpson, Gwen Stefani, Will Smith & Diddy and more

RED-HOT 'MAMMA'

Meryl Streep puts London on red alert in her chic ensemble at the world premiere of her musical comedy Mamma Mia! Monday at the Odeon in Leicester Square. The film premieres Stateside on July 18.