It is difficult to see where this style begins or ends
Personally I find it hard to distinguish whether the sitter had a rough journey to the photographers or has overdone the "Windswept" part of the look.
Perhaps it serves to prove that an attractive face can get away with anything.
This style was very popular at the time and has a place in hairstyle history.
The Extreme Windblown style makes these
styles look neat and tidy.
Other named Bobs:-
and the succeeding Shingle and its variants.