01 - Place orange segments, grapefruit segments, pineapple chunks, fresh basil leaves, coconut water, lime juice, and sweetener if using into blender canister.
02 - Add ice cubes to blender on top of other ingredients.
03 - Blend on high speed until completely smooth and creamy, approximately 1-2 minutes, stopping occasionally to scrape down sides of blender container.
04 - Taste smoothie and adjust sweetness or citrus balance as desired by adding more sweetener or lime juice.
05 - Pour into glasses and serve immediately, garnished with additional fresh basil leaves if preferred.