Photos: 64th Cannes Film Festival best and worst dressed

Kirsten Dunst wearing Chloe at the photocall for ‘Melancholia.’  (Ian Langsdon / EPA)

Vanessa Hudgens wearing a shiny black and bronze beaded Roberto Cavalli gown at the 3rd Annual Finch’s Quarterly Review Filmmakers Dinner at Cannes.  (Michael Buckner / Getty Images)

Italian Tiziana Rocca.  (Anne-Christine Poujoulat / AFP / Getty Images)

Penelope Cruz in Marchesa, attends the “Pirates of the Caribbean: On Stranger Tides” premiere at Cannes.  (Andreas Rentz / Getty Images)

Jon Hamm in head to toe Lanvin and Jennifer Westfeldt attend the Red Granite party.  (Andreas Rentz / Getty Images)

Sarah Jessica Parker in a floral printed crepe georgette gown from the Elie Saab Autumn/Winter 2011-2012 ready-to-wear collection.  (Christophe Karaba / EPA)

Actress Tilda Swinton wearing Haider Ackermann.  (George Pimentel / Getty Images)

French playmate Celine Durand.  (Anne-Christine Poujoulat / AFP / Getty Images)

Diane Kruger in Calvin Klein.  (Andreas Rentz / Getty Images)

Rachel McAdams wearing a Marchesa gown.  (Pascal Le Segretain / Getty Images)

French designer Inès de la Fressange wears a Lanvin strapless eggplant washed-satin gown with draping at the bodiced waist.  (Guillaume Horcajuelo / EPA)

Model Karolina Kurkova in an dress from the Armani Privé Fall 2009 Haute Couture collection.  (Pascal Le Segretain / Getty Images)

Emily Browning in Valentino.  (Andreas Rentz / Getty Images)