Frida Kahlo

 Frida Kahlo’s most significant self-portrait was Self- Portrait with Thorn Necklace and Hummingbird. According to some art historians, Kahlo wanted to depict that she was resurrected and started to a new life with this painting. As a symbol of this opinion, hummingbird was taking its place in her necklace. Hummingbird symbolizes hope and good luck in Mexican culture. However, audience may notice the black cat- known as bad luck symbol- taking its place behind the right shoulder of Kahlo. Different interpretations offer that hummingbird pendant refers to Huitzilopochtli, the Aztec god of war, which hurts Kahlo internally.
 - http://www.dailyartmagazine.com/frida-kahlo-symbolism/

'Other important symbols of the painting were butterflies and thorn necklace. Butterflies symbolize resurrection and it may refer to her rebirth in life after the accident. Furthermore, thorn necklace she wears may be the symbol of Jesus’s crown thorn, which was worn while dragged and crucified.'

 - http://www.dailyartmagazine.com/frida-kahlo-symbolism/