What should I pack for a 4 day trip to the beach?

The best way to figure this put is to plan your wardrobe. Lay out on the bed all your planned outfits, choosing things that you can combine in order to save space. Take one pair of jeans, or skirt and a fun top for an easy night or day outfit. Think about things that can be used for either night or day, and choose your most versatile items. And don't forget sunblock!