Alright a leather jacket is a must for this style. The jacket takes you to the next level quite easily. Most jackets will be good, just do not throw on a black leather jacket and a white T-shirt expecting no one to call you a greaser.
Wear a light blue dress shirt and black chinos if you're going for a neat, stylish look. Black Tie — Light Blue Dress Shirt — Brown V-neck Sweater — Dark Brown Leather Bomber Jacket — Dark Brown Leather Belt — Black Chinos