This Girl’s Generation/SNSD photo contains
demoiselle d'honneur and demoiselle d’honneur.
There might also be
robe de dîner, formel, robe de soirée, formelle, robe, robe de cocktail, and gaine.
Man.. Fany handled this interview like a boss, she asked Brad Pitt to say hi to 'Sooyoung' (which he did of course, such a nice fellow) who is probably his biggest fan. xD