Studio baby milestone sessions are perfect for babies that are starting to achieve those first year achievements – tummy time (3-4 months), sitting up (6-7 months) and first birthday celebrations. Sitter sessions should be done when baby can confidently sit up without concern of tumbling – for these sessions, mastering the milestone is more important than an exact date on the calendar, and this ensures a greater variety of images from your session. Many happy babies start to develop “stranger danger” around 8-9 months, so sitter sessions are encouraged before that realization sets in.