I'm going to help work the special Olympics in my town with a school club and my senior prom is in two days. I'm tan enough for prom but I'm scared since tomorrow it will be very sunny and we will be out in the sun for hours. I'm going to wear a vneck tshirt and shorts and I don't want to get a farmers tan. What can I do to prevent this. I won't have to get in a tanning bed and fix it in time and I can't wear a strapless shirt to this event. Any help will be appreciated. Thank you.