This Lady Gaga photo contains
sign, poster, text, chalkboard, fedora, felt hat, homburg, stetson, trilby, street, city scene, and urban setting.
There might also be
pith hat, pith helmet, sun helmet, topee, topi, well dressed person, suit, pants suit, pantsuit, dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, and beaver.