This Little Mix photo contains
plaisancier, leghorn, panama, marin, skimmer, chapeau de paille, barbeau, chapeau, écumoire, paille, canotier, livourne, chapeau panama, sailor, portrait, headshot, gros plan, and closeup.
There might also be
fedora, chapeau de feutre, homburg, stetson, trilby, hombourg, chapeau de feutre trilby, and castor.