In 2005, historian Armin Schlechter of Heidelberg discovered the answer. While looking through an old manuscript, he found a small note. In this, the woman in the Mona Lisa was positively identified as Lisa del Giocondo. The artist had been paid to do her portrait after the birth of her second child. "Mona", in fact, means "madam" in Italian. As for her unearthly, look? Historians say woman of this time, liked to remove their eyebrows. Apparently they thought eyebrows were not attractive.