Place watermelon, strawberries and banana in a good quality blender.
Add the yogurt, honey, chilled milk and vanilla extract, blend until smooth.
Transfer to glass cups and serve immediately for best results!
Notes
If you want to save the watermelon smoothie for longer periods, it is a good idea to transfer the smoothie to ice cube trays and freeze in the freezer since smoothies tend to freeze well if stored properly. Just before serving, you can use the frozen watermelon smoothie cubes and blend again in a good quality high power blender to make delicious smoothie!