The puppy cut is the most popular hair cut for pet Maltese, for both puppies and adults. It has this name due to the fact that young pups naturally have this style, since their coat has not had time to grow.
Length can vary from 1/3 inch (slightly above a shaved coat) to several inches, which is a more moderate fluffed look.
Though very young pups will not have hair long enough for a top knot, once a Maltese is an adult, he can have a puppy cut but a top knot may be left. This said, when the forehead is rounded off to match the coat length, this give a very cute 'teddy bear' appearance, and is a nice option as well.