Lior: I don’t understand your question. Is it okay to wear a mini skirt? I offered no halakhic opinion.
Any act by a female with the intent of causing ossur thoughts by men would likely be lifnei iver (perhaps even if no such thoughts occur). If the intent is not there it would likely depend on the degree of certainty and control as to whether the assur thoughts would occur as per societal norms.
These are my preliminary thoughts, and I welcome discussion focused on the process I used to arrive at my conclusion. Disagreeing with my conclusion because it is “obviously” wrong will get us nowhere.