Identifying this article of clothing

What’s the name for the poofy-shouldered cloak-type garment that Lorenzaccio is wearing in this lithograph? Is it a real article of clothing or something made up during the Victorian era?

What’s the name for the poofy-shouldered cloak-type garment that Lorenzaccio is wearing in this lithograph? Is it a real article of clothing or something made up during the Victorian era?