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Find a car, tree, or bush to conceal at least half of your body while you change into your bathing suit. Change on the side of the car, tree, or bush that is facing away from the beach or the public area. You can also ask a friend to hold up their towel while you change into your bathing suit. Have them hold their towel horizontally and as close to you as possible. This way their towel will be similar to a stall wall. First take off your shoes and socks. This way you can avoid getting your underwear or bathing suit bottoms caught on your shoes. While you are standing up, begin to wrap the towel around your waist. Fasten the towel around your waist by tucking the top outermost corner in between your skin and the towel. You should wrap the towel tightly around your waist, but not so tight that it makes it hard to maneuver. If you have a hair clip, you can also clip your towel instead of tucking it. For best results, you should use an adult sized towel where your whole body is able to fit inside the area of the towel, including your feet. While the towel is wrapped around your waist, first remove your pants, shorts, or skirt. Then reach under the towel, pull down your underwear, and step out of it. If you are wearing a dress, simply wrap the towel around your waist, and pull the dress up over the towel. Then remove your underwear. If you are wearing a bra, reach under your shirt and unhook your bra in the back. Then pull your arms out of your shirtsleeves and slip your bra off your shoulders. Put your arms back through your shirtsleeves so you can complete the rest of the process.
Find a secure area. Take off your shoes and socks. Wrap a towel around your waist. Remove your underwear. Remove your bra.