In addition to the headpiece, you might want a veil. Veils come in different styles and lengths. Select a length which complements the length of your train. Consider the total look you're trying to achieve with your gown, headpiece, veil, and hairstyle. Make sure you ask for this before purchasing your gown.
Gloves come in various styles and lengths.
Depending on the length of your sleeves, select gloves that reach above your elbow, just below your elbow, halfway between your wrist and elbow, or only to your wrist. Fingerless mitts are another option that you may want to consider. You should not wear gloves if your gown has long sleeves, or if you're planning a small, at-home wedding. Purchase complementary jewelry for your bridesmaids, to match the colors of their dresses. This will give your bridal party a coordinated look.