In a blender, combine all ingredients; cover and process until smooth. Pour into chilled glasses (if desired, keeps them 'slushy' for longer). Serve immediately.

**For an extra pretty touch, twirl the glass rims in a saucer filled with a little water & then dip in another saucer with sugar using a twisting motion to adhere the sugar to the glass. Slice a slit in a small triangle of watermelon & slick it on the glass.