My favorite new smoothie - very low cal

I love to make smoothies and last night I threw together this extremely low cal smoothie that was surprisingly VERY taste! It tasted similiar to an Orange Julius - similiar enough for only about 50 calories at least! It is my new favorite for sure! I'm not going to even try to put measurements. I just throw it all in my Magic Bullet and blend.

Cubed Cantaloupe
spinach
orange Crystal Light On the Go packet
skim milk (not alot)
ice cubes
water
vanilla extract (just a little splash)
cinnamon (I think just a little bit pulls together the flavor in alot of smoothies, but could just be me)