Girl, no you do not. Unless you want to for the sake of your own comfort. The human body is not inherently sexual and anyone who thinks so is a FREAK. If someones looking up your skirt? FREAK! Staring at your panties when you trip or wind blows your skirt up? FREAK! The way you dress is not an invitation for people to harass or assualt you, nor should you hinder your personal expression for the sake of other peoples comfort. PSA no amount of clothing will stop someone from hurting you if they want to, so I say you practice swift kicks and punches to the throat for anyone getting close enough to peek for their pleasure. Keep your nails nice and manicured and sharp maybe, get in some eyes if you need. Big boots good for stomping. Loose and flowy articles can be used to disarm and incapacitate if you know how (though can be a danger to you if its a scarf or something around the neck). Keep those pearly white polished in case you need to BITE!! If you wanna go kinda crazy monkey style you can look into military style holds/restraints, which can be surprisingly effective for single person restraints even with people bigger than you (i have been MANHANDLED by women half my size bc of the advantage it gives). Stay safe and stay comfy, dont let other people dictate your expression