Possible Clues:

• See 25-Down
• Frida known for her self-portraits
• Painter of many brightly colored self-portraits
• 'The Two Fridas' painter
• "The Two Fridas" artist
• "Four Inhabitants of Mexico" painter
• Artist played by Salma Hayek in 'Frida'
• See 18-Down
• Painter Frida who was heavily influenced by Mexicanidad
• See 17