In China there is a custom that newborn babies must stay inside, with their mothers until the baby is 100 days old (a little more than 3 months.)  On the 100th day, you are to take your baby to the photographer and have their pictures taken.  Even though we didn’t keep Elizabeth and Erica cooped up in the apartment for 3 months, we thought it would be fun to have “100 Day” photos taken.