This Tamanna Bhatia photo contains
robe de dîner, formel, robe de soirée, formelle, plaisancier, leghorn, panama, marin, skimmer, chapeau de paille, barbeau, chapeau, écumoire, paille, canotier, livourne, chapeau panama, and sailor.
There might also be
robe, fedora, chapeau de feutre, homburg, stetson, trilby, hombourg, chapeau de feutre trilby, robe de cocktail, and gaine.