This doctor who screencap might contain
sombrero de ala, sombrero de fieltro, homburg, stetson, sombrero de paño, fedora, trilby, fedora sombrero de fieltro, sombrero, navegante, livorno, panamá, sombrero de panamá, marinero, espumadera, sombrero de paja, barquero, leghorn, sombrero panamá, and skimmer.
WARNING SERIES 4 SPOILERS I've had this video planned for a little while, I just waited for the end of the series till I did it. It's just how the Doctor has grown in the last series.