I've seen a lot of posts about Palpatine's red sith robe but what about his main prequel skin that he had in both the clone wars and revenge of the Sith :
Palpatine costume pattern. In 6 sizes. 501st approved – juliechantal
What's Your Favorite Palpatine Look? | Annlyel Online
Emperor Palpatine Cane + Buckle / Broche Set for 3D Print | RPF Costume and Prop Maker Community