This How to Rock photo contains
demoiselle d'honneur and demoiselle d’honneur.
There might also be
robe de dîner, formel, robe de soirée, formelle, robe de cocktail, and gaine.
Max Schneider, from Nickelodeon's "How to Rock," talks with StarCam's Jennifer Tapiero at A Time for Heroes Celebrity Picnic about playing the ukulele every day,and having Cee-Lo Green as a guest étoile, star on his show.