Originally from the Indian subcontinent as long pants, reaching to the ankle, snug from the calf to the ankle, with reinforced fabric protecting the inner calf and knee from rubbing, Jodhpurs, in their modern form, are tight-fitting trousers that reach to the ankle, where they end in a snug cuff, and are worn primarily for horse riding.
The term is also used as slang for a type of short riding boot, also called a paddock boot or a jodhpur boot, because they are worn with jodhpurs. Originally, jodhpurs were snug-fitting only from just below the knee, to the ankle and were flared at the hip; modern stretch fabrics have allowed jodhpurs to remove the flare and yet remain supportive and flexible.
Ladies began wearing jodhpurs in the early 20th century, as they shifted away from riding horses sidesaddle, and it quickly became a favorite fashion trend of young people, especially badass girls.
These snapshots that capture young girls wearing their jodhpurs from between the 1910s and 1920s.