Becoming a parent can be the most exciting, yet overwhelming, time in a new mom or dad's life. Choosing the correct size of diapers for your baby does not need to be part of the new parent chaos.

Some models do the catwalk. Others do catalogs. You’ll find Alyssa Alexander’s work in the personal care aisle of your local drugstore. As the face (and, erm, bottom) of Depend underwear size XL, ...