Rihanna, Jimmy Fallon and Cameron Diaz Lead Today's Star Sightings

From the Diamonds World Tour to Late Night studio, the stars have been busy bees in the last 24 hours. Rihanna hit the stage in Antwerp for the second night in a row as she performed inside the Sportpaleis arena for her world tour. The 25-year-old superstar is due in Paris on Saturday, followed by...