Outfits really do make a big contribution to your session! It can pull everything together and really make your final media look really cohesive. I am available to help you with outfit planning! Please email or text me (2699861626) photos of what you are thinking for yourself and then we can put a plan together for the other members of your family. ALWAYS start with yourself first! It's a lot easier to find options for kids rather than trying to find something that matches them. So find something you absolutely love for yourself first, and then tackle the family. Remember: If you don't love it in the store/try on, you won't love it in your pictures. Find something that's flattering and that you can move around in. (Look at it from different angles and positions.) 
You can go more dressy, or keep it more casual! Here is a pinterest link for cohesive colors/styles you might find inspiration in! Instead of looking too matchy, aim for coordinated. Ideally I love to incorporate one print, different textures, and some neutrals. 
*Please take into consideration dressing for the weather if your session is outdoors.