The most important thing is that you must feel comfortable, otherwise it will show in the photos. You also want the photo's to represent you and your family. So you do you. However if you need a bit of guidance here are a few tips on some things that will make the resulting images feel more timeless and more pleasing on the eye.
Soft and neutral tones will always photograph well, e.g. pastels or greys/beiges/whites (not all white though)
Earthy tones will give a more vibrant feel and look great together (burgundy/greens/mustards/blues/burnt oranges)
Use variation in colours for each person as well as mixing up different textures (denim/cotton/wool/linen, etc) this will add depth and texture to your images
Layering looks lovely in photos and can give you variation (scarfs/shirts/hats/cardigans/jackets – depending on weather)
If you are feeling self conscious about any baby weight, I find floaty dresses work well or leggings/jeans and an oversized top for a more relaxed vibe.
Ideally stay away from too bright or overly patterned clothes as this will take away from what is happening in the images
I would advise to stay away from big logos/brands printed as this will takeaway from the timeless feel of the images.
Don't all wear the same item of clothing or same colour, e.g. all jeans and all white shirts. This will look too contrived. We want each personality to shine.
During our pre-photoshoot discussions I am more than happy to help you with your outfit choices further and you are more than welcome to whats app me some ideas or any options that you have already in your wardrobe. Ideally I wouldn’t want you to spend where you wouldn't need to. I want you to feel comfortable and confident!