Place the Spiced Rum, Passion Fruit Rum, Pineapple Juice, and Sprite into a cocktail shaker filled with ice, and shake for 15 seconds until well combined.
Pour into a glass filled with ice to fill it about one-third.
Place the Malibu and Blue Curaçao into a clean cocktail shaker filled halfway with ice, and shake for 15 seconds until well combined.
Strain the blue mixture into the glass on top of the pineapple mixture.