Depends if your asking about a real fight on the street or an arranged rules style, if a street fight nothing beats jeans you protect legs and other areas, and a decent top, naturally if a woman out wearing jeans more likely to be a V or scoop or sweet heart cut showing cleavage but if a standard tee it will get rips if not fully a GOOD bra is crucial , if you mean arranged rules , i prefer lingerie but have done dresses , leggings, bikinis , really comes down to what both agree on over preference but in arranged you need the agility an freedom to move and move fast.
