This is obviously a family portrait of the the Obama family. This family portrait is sort of formal but more realized due to the posing and body language between the children and the parents. There clothing is casual and you can tell that the daughter in the green has a closer relationship with her dad, and then the daughter in the blue has a closer relationship to her mother. It is outdoors, so it contributes to the idea that they seem like a relaxed family, and they are adventurous.