whether you want to do it locally or travel to Melbourne for it, check out online. Every photographer has a different style, so browse for what you have in mind. And then meet with them. You may find their style either too stilted & contrived, or a bit too 'airy', depending on your tastes.

My wedding photographer does brilliant boudoir shots that you could adapt to be very tasteful family shots, but with loving nudity (as opposed to sexy nudity).

Search for child/family photographers, or even wedding photographers as you may find they do family shots too.