Quote Originally Posted by Trade Winds View Post
I dont have a guppy but I have a Moon Kelp to fit my fantasea and it is likely the same fabric. So when I got my very first tail in February, Eric changed the size charts RIGHT after I ordered. At first, I was a small and now I should probably be an xtra small. You could probably get away with a smaller size. I know I could. I probably SHOULD have sized down but all mine are small. The fabric is verrry clingy when you get in water too, like suction to your legs and show allll the lines in your knees and legs.

If you get one that is too big you could always take it in to be smaller- or maybe exchange it if needed but I'd personally avoid that route.
Oof I ended up ordering a medium and I'm hoping that there's enough stretch that it ends up fitting.