In 1531 in Mexico, the Virgin Mary appeared to an indigenous convert named Juan Diego. As a result, our Lady of Guadalupe's image was miraculously imprinted on Juan Diego's cloak.
Below is a picture of Juan Diego's cloak that her image appears on today. One the left side is the a close up of the cloak and on right side is where the cloak hangs today in the Our Lady of Guadalupe Basilica located in Mexico City. Many attempts to destroy the cloak through bombing and fire have miraculously all failed to destroy the cloak.
Our Lady of Guadalupe, also known as the Virgin of Guadalupe, is a Catholic title of the Blessed Virgin Mary associated with a series of five Marian apparitions in December 1531, and a venerated image on a cloak enshrined within the Basilica of Our Lady of Guadalupe in Mexico City. (Always remember to have your medal blessed by a priest).