From Rihanna to Beyonce to Alexa to Rooney, see all the best black dresses and evening gown excellence from the Metropolitan Museum of Art Ball aka Oscar Night for the fashion community... right here at Littleblackdress.co.uk... Monochrome marvellous Left to right: Christina Ricci, Alexa Chung, Amy Adams. Metallic mavens Left to right: Jessica Alba, Michelle Dockery, Nina Dobrev. Backless beauties Left to right: Renee Zellweger, Rihanna. See-through and sexy Left to right: Beyonce, Chloe Sevingy, Rooney Mara. Low-cut luxe Left to right: Claire Danes, Debra Messing. Evening embellishment Left to right: Liv Tyler, Rosie Huntingdon-Whitely, Gisele Bundchen. Tactile glamour Left to right: Cate Blanchett, Eva Mendes, Kate Bosworth. Let us know who gets your vote for Best Black Dress at the Met Ball on Facebook here.