There are several forms of Furfrou that you can catch in Pokémon Go. They will all be released during Fashion Week 2021, which runs from September 21-28. With so many unique modules to acquire, they could fill your Pokémon collection pretty quickly. However, each module has a distinct requirement and you will need to unlock them in a certain way. Here's what you need to know to unlock the Furfrou Diamond skin in Pokémon Go.
The only way to receive Furfrou in its Diamond finish is to be in the regions of Europe, the Middle East or Africa. If you are not in any of these regions, you will not be able to transform your Furfrou into the Diamond finish. Also, you can't find this Pokémon skin in the wild. The only way to get it is through the new shape change mechanic. However, the regular version of Furfrou appears all over the world.
When you are in one of the required regions and you have a Furfrou in your collection, all you have to do is find and examine it. From there, under the 'power on' option in the choices, you should see an 'edit module' option, similar to if you could evolve it. From there, select to have your Furfrou change shape and you should be able to choose the diamond trim option. Each time you choose Furfrou to undergo a shape change, it costs 25 Furfrou candies and 10.000 Stardust.
Many of the forms of Furfrou will go through this requirement. Fortunately, these appearance changes aren't accompanied by stat or type changes.
