As we started her session, three month old Tessa decided that her fingers are very tasty treats, and she should try to put them in her mouth at every opportunity. One of the things I love about watching these little ones grow is the amount of change and personality that appears in the first year. At three months, little ones are just starting to smile more often, hold their heads up longer and wiggle a bit more. They are the little cherubs we imagine with rosy cheeks and little wings.. Tessa is no exception. She should have a halo.