Best Looks of the Week: Jessica Chastain & Marion Cotillard Pop in Bold Colors

With the 2013 BAFTA Awards and Grammy Awards taking place this past week, we saw some pretty amazing dresses on our favorite stars. But certain ladies stood out among the sea of gowns on the red carpet thanks to unapologetically lively hues. The skies may have been gray at the BAFTA Awards, but Marion Cotillard had a sunny style moment in a bright yellow Christian Dior design, while fellow attendee Jessica Chastain looked absolutely stunning in a bold blue Roland Mouret gown.  Rihanna popped on the Grammys red carpet in a ravishing red Azzedine Alaia gown with sexy sheer paneling, while Katy Perry hit the Recording Academy's MusiCares Person Of The Year Gala in an equally »