Winter dressing is all about having chic outerwear.
For slaves to fashion, the rules are made to be broken.
The weight of a fabric is inconsequential, since seasonal dressing is all about layering.
I like to spend Christmas with family and friends, pigging out, exchanging gifts and basically doing nothing.
For proper family portraits it's best to stick with classic, timeless looks that will not only be beautiful now but also in 20 years, and keep the wardrobe color palette similar so it looks like the group shot was well planned.