Cat breed

Good morning, Pet Talk! I'm currently owned by my kitty, 4 year old Groucho. He has a wonderful temperament and the sweetest personality any human companion could hope for. My Groucho is black and white, black along his back and part of his face; white on his tummy and again part ofr his face. It was his Groucho Marx moustache that I first fell in love with. My question to Pet Talk, how to determine if my Groucho is a Tuxedo? As much as I love my little guy, there's so musch I don't know about things like this. Any thoughts, information, or input anyone can offer will be so greatly appreciated. Thank you one and all. And please give your pets a hug from me? momcat