During spring and summer, a slit skirt that lets a cooling breeze through is beautiful and right for the weather. For casual days, choose a pretty one with cute prints and for the office, choose a formal one with a slit that doesn't go too far high. A slit skirt can work for evening too. At night, push the envelope with a higher slit. If the skirt is long, wear it with a close-fitting top for balance. If it is a short one, a fitted top would still work well but so would something boxy or loose. A skirt that can be dressed up or down is a wardrobe essential.