Take two bread slices and place one edge on another to form a large rectangle with 2 bread slices, tightly rolling them together (especially on the overlapping edges). Set aside.
In a bowl, combine castor sugar and cinnamon powder. Set aside.
Brush melted butter on the rolled bread slice, then sprinkle the prepared cinnamon sugar on it. Apply water on one edge of the bread.
Roll the bread slices lengthwise, sealing the edge with water.
Cut the rolled bread in half lengthwise and twist two strands of bread around each other to create a braid.
Form the braid into a circle, tucking the loose ends underneath, and place it on a baking tray.
Brush melted butter on top and bake in a preheated oven at 180°C for 10-15 minutes or until the bread turns a nice golden brown.
While baking, mix icing sugar with a small amount of water to create a glaze.
Once done baking, remove from the oven and let it cool for some time. Drizzle the prepared glaze on top.