Tabitha Simmons Tabitha Simmons has always admired Johanna Ortiz's bold prints and vivid color palettes, which are key features in her collaboration with the Colombian designer. These 'Lassie' slides have been made in Italy from raffia decorated with blooms in warm tonal-red, orange and ecru hues. They have thick crisscross straps and a slight heel, so they're comfortable enough to wear all day on vacation.