"Daphne Guinness wore a cool headpiece of her own to "20 The Exhibition" to celebrate twenty years of Maison Martin Margiela at Somerset House in London today."

http://nymag.com/daily/fashion/2010/06/if_daphne_could_flap_her_lace.html

IT Looks like Valentino (collection A/I  09/10 HAUTE COUTURE)???