To create timeless images that focus on the subjects and emotions, I strongly suggest wearing colors that compliment each other and avoid harsh patterns and logos(including plaid and striped shirts).

Select something color and weather appropriate if the season is what inspired you to get a family portrait. Otherwise, I suggest earthy and neutral colors such as light and dark gray, white, rose, pale pink, light blue, earthy brown, beige, etc.

Beach sessions are better if you are not wearing shoes, so if your session will take place at the beach keep this in mind.