Clothing
For clothing, I would suggest family members wear similar neutral tones as fancy or patterned attire will distract from the subject. Since we’re trying to capture natural images, I also find that a slightly more casual approach tends to work better. Logos can look dated very quickly, so I recommend plain clothing wherever possible. White, black, grey or light pink T-shirts, shirts, dresses, polo- or turtle-necks, beige or khaki trousers, skirts or denim jeans all work well.
Whatever the attire though, it needs to be clean, ironed and looking fresh.
Another advantage of doing the session at home is that changes of clothing can be done quickly and comfortably.
For pregnancy sessions, simplicity is best. I suggest that you have on hand a selection of your pregnancy wardrobe—i.e.: black and white, figure-hugging clothes and soft shawls/fabrics. In addition I will bring a range of satin and muslin fabrics for draping.
Hair and make-up services can also be arranged, in which case the stylist will need to arrive an hour or so before I do.