OMG! What do I wear to a photo shoot?
There are so many ways to approach this conundrum. I tell my clients that if we are doing an in studio photo session, the humans should wear solid color shirts, but not white. Jeans or shorts are great, or whatever you're most comfortable in. I want you and your family to feel comfortable because we will be getting up, sitting down, maybe even lying down.
On location shoots are similar. I also suggest solid colors, but it's not required.
Your furry companions have it much easier. I would suggest a bath and grooming session two to three days before your shoot. And if you like to dress them up, make sure they're comfortable in costume also. Some clients bring a necktie or glasses that their dog likes to wear for a couple of images.