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 :
The Rise Of Skywalker Palpatine Shocking News Revealed! (Star Wars Episode 9) - YouTube
Rubie's Deluxe Emperor Palpatine Costume Standard Red : Clothing, Shoes & Jewelry - Amazon.com