The short anwser to that is as soon as you know you definitely would like a newborn session. Most of my clients book their sessions shortly after their 20 week scan. Please note that I take on a limited amount of shoots per month, to allow for the fact that newborn arrival times are unpredictable. This means I juggle my diary on a weekly basis and it often means swapping appointements around.
Generally, diary allowing, I book in all of my newborns for 6-12 days following your estimated due date. Of course if baby is early or late, we may need to re-arrange, but booking the time out of the diary means that you are guaranteed to be accommodated.
If you are due imminently or the baby is already here you are welcome to contact me to check if there are any slots that have come up and are free, this can ocassionally happen if babies booked in don't arrive on their due dates.
Please note - once your baby is over 14 days old, newborn sessions are no longer possible as your baby will no longer be sleepy or flexible enough for me to achieve the images that you see on this website.