Who Wore it Best: Sienna or Jessica?

Sienna Miller and Jessica Alba were both spotted wearing this Isabel Marant dress. Who do you think wore it best? Cast your vote below.

Source: http://www.vivafashionblog.com/2011/07/who-wore-it-best-sienna-or-jessica.html

Annette Bening Talia Balsam Jessica Pare Scarlett Johansson