The character you refer to as a female in martial arts clothing...is a man. The long hair is simply a reference to the time. There aren't any women in martial arts clothing in the film. Two school girls appear in the fight scene, but they are in school uniform so it can't be them either. Also the blonde woman in the bikini, the Britt Ekland character in the film, is dancing not waving anyone away. This was described by the posters artist Robert McGinnis. Thanks
