I ask Thelma's stepsister to draw me a palm tree like the Little Prince asked Antoine de St Exupery for a "mouton". 

This is the lovely drawing she came up with, I just had to make it into a block.

Size S - 1/2YO

Size M - 2/3YO

Size L - 3/4YO

Please bear in mind that this style sizes on the smaller size around the waist, but they can be kept for longer if you have a nice seamstress around the corner who can change the elastic as your child grows. We highly recommend keeping these as long as possible, the fabric just gets softer and softer as time goes by!