Abstract: A disposable diaper apparatus is provided for use on babies and is made of a layered flat absorbent material having a generally rectangular shape and first and second end portions and a center portion. The center portion has arcuate edges extending into the generally rectangular shape to provide a form fitting diaper having a pair of attaching tapes for holding the first and second end portions together. The improvement in the diaper includes, a removable perforated area in the first end portion along one edge thereof and positioned to fit over a navel area of a baby wearing the diaper so that the perforated area can be removed for young babies to help prevent umbilical infection in the baby.