Begin by placing the banana, frozen pineapple, frozen mango, pineapple juice, and coconut milk into a blender.
Blend the mixture on high until the texture becomes completely smooth and creamy.
Once blended, pour the smoothie evenly into two glasses.
If desired, add garnishes like fresh pineapple wedges, maraschino cherries, lime slices, or mint sprigs for a tropical touch.
Serve immediately for the freshest flavor and consistency.