Is there any greater symbol of your love of coffee than 6.5" (15.9 cm) tall, 10" (25.4 cm) in diameter real porcelain cup perched on the edge of your desk or kitchen counter? While you should never drink 20 cups of coffee in one sitting, you can take comfort in knowing that the World's Largest Coffee Cup could hold 20 regular cups. Of course, that's only 19 cups if you leave room for cream. Made of porcelain. Heavy.