Natalie Portman wasn't walking down the red carpet when this photo was taken, but her diamond collar necklace would have worked just as well with a gown as it did with casual wear. Two more pendant necklaces round out her natural look -- far different from her appearance at the premiere of Blindness. The festival doesn't end until March 25th -- it should be interesting to watch styles evolve over the next week.

_{Photo by Dave Hogan/Getty Images}