Check out this Tuxedo Groom's Cake! I make this for a wedding Thanksgiving weekend. Not a great time to make a cake, but I wasn't going shopping anyway. I don't have finished pics of it. They were adding flowers or ribbon or something to the top.
This is a Devil's Food cake, with a chocolate pudding filling, and chocolate syrup added to both layers. Standard buttercream with almond flavoring. The tuxedos and bow ties are made of craft foam since my customers didn't want to use fondant. The buttons are black buttercream.