Hera is the Greek goddess who was considered the queen of the Olympic pantheon. According to Encyclopedia Mythica, Hera was the wife of Zeus, "Hera was mainly worshiped as a goddess of marriage and birth" even though she was represented as a jealous women who was constantly punishing her husband's consorts and their offspring. Hera is most often seen as a stately, majestic woman, so any costume representing her should reflect her important status.
Adorn a white dress in the Grecian style. If you don't have a plain white dress, consider turning a length of white, lightweight material into a toga. To make a toga hold 3 to 4 yards of unfolded material horizontally and wrap it around your waist one and a half times. With safety pins, secure the toga to your waist. Throw the remaining material over your shoulder then bring it back to the front under the opposite arm and tuck it into the waistband. Use more safety pins to secure the toga safely in place.
Use a gold-toned tiara to substitute for Hera's regal crown. If you can't find a tiara, cut a crown shape from flexible cardboard and embellish it with gold glitter or paint. Use bobby pins to secure it in place. Secure a length of tulle to either side of the crown to make a perfect veil.
Pin or glue peacock feathers across the bodice of the toga or anywhere on the pre-made dress that seems appropriate. Peacocks are considered sacred to Hera, both because they symbolize her pride and because her chariot was said to be pulled by peacocks. You can buy peacock at most craft stores.
Embellish the costume as your creativity and budget allow. Add a gold belt and some gold-tone earrings, bangles, a necklace and sandals, all in the Grecian style. Add more feathers to the hem of your dress or toga or in your hair. The more regal you look, the more your costume will represent Hera, the Greek goddess of marriage and family.
If wearing a toga, wear a white T-shirt and white leggings underneath for extra security and warmth.