The painting's fame increased after its theft from the Louvre on August 21st, 1911.<ref>25 Crimes of the Century: Stealing the Mona Lisa, 1911, Time magazine http://www.time.com/time/2007/crimes/2.html</ref> Additionally the expression of the figure sitting for the portrait is often described as enigmatic, leading to a great deal of speculation. | The painting's fame increased after its theft from the Louvre on August 21st, 1911.<ref>25 Crimes of the Century: Stealing the Mona Lisa, 1911, Time magazine http://www.time.com/time/2007/crimes/2.html</ref> Additionally the expression of the figure sitting for the portrait is often described as enigmatic, leading to a great deal of speculation. |