http://nymag.com/daily/fashion/2011/05/see_all_the_looks_from_the_201.html#photo=66x87252
From the 2011 Costume Institute Gala Red Carpet
at the Metropolitan Museum, New York
May 2, 2011
(http://cache.nymag.com/daily/fashion/upload/2011/05/see_all_the_looks_from_the_201/02_metcostumegala_michellewilliams.jpg)
Michelle Williams wearing a dress by Miu Miu (Miuccia Prada).
Photo: Stephen Lovekin/Getty Images
Looks a little bit like one of Heath's bird tattoos....
Also:
http://nymag.com/daily/fashion/2011/05/see_all_the_looks_from_the_201.html#photo=83x87273
(http://cache.nymag.com/daily/fashion/upload/2011/05/see_all_the_looks_from_the_201/02_metcostumegala_sarsgaardgyllenhaal.jpg)
Peter Sarsagaard & Maggie Gyllenhaal
(Peter Sarsgaard wearing a suit by Yves Saint Laurent.)
Photo: Larry Busacca/Getty Images