In this part of the world, the sun is usually quite strong and blinding even in these months when it is winter in many parts of the world, so it is normal to wear sunglasses.
When I took the photos a few years ago, it was during an improvised session simply to keep them as a "family memory", but nowadays I try to give them another meaning with the editing process, giving them an added value by turning them into artistic photos to be able to share them.
Merry Christmas @friendlymoose! ☃️