Jodhpur

A jodhpur was a type of trouser

River Song exclaimed she planned to wear jodhpurs after examining her buttocks post-regeneration. (TV: Let's Kill Hitler) She soon did wear a pair. (TV: The Pandorica Opens / The Big Bang)

Romana wore beige jodhpurs with her scarlet frock coat, her white shirt, her ivory stock tie, her gold waistcoat, and her brown boots. (TV: The Horns of Nimon)