Famous for her Rainbow Explosion cake, Amirah Kassem is a firm believer in the birthday lifestyle and the power of sprinkles. She returned to Los Angeles from her Flour Shop bakery in New York over the weekend for a demonstration of her colorful exploding six-layer creation. βOn your birthday you wake up, you wear your favorite clothes, hang out with your favorite people, eat your favorite food and are just happy,β Kassem tells L.A. Weekly. β If you can create that on your birthday, you can create that all year round. Every day should feel like your birthday.β