A fictional heroine in the Filmation cartoon and series of toys produced by Mattel called She-Ra: Princess of Power. She is the alter ego of Princess Adora and the twin sister of He-Man. She-Ra was intended to appeal to young girls in the same way that He-Man appealed to young boys. She wielded her power through the Sword of Protection.
Remember the pink Crystal Castle playset? My sister still owns this She-Ra accessory. Her daughter plays with it now.