This would be a cute outfit to wear to a senior or engagement session. Even a family photo shoot would look great with this blue and orange color combo. Other family members could wear clothing in various prints or solids of blue or orange.
This is a great example of a casual style to dress your family in for a portrait session. Keri Russell and her family are wearing similar collared shirts and pants but they are all different colors that coordinate together (blue, white, and black). A classy and timeless style.
Clients often ask me what they should wear to a photo shoot. I like to tell them to dress their family in a color scheme that has 2-3 colors in it. That way everyone won't be too matchy-matchy. Here's a helpful color clothes chart I saw on Pinterest to help you pick out a good color scheme for your session. Click on the image to zoom in.