If I could choose a winter brunch uniform then it would be a sweater dress and over-the-knee boots. The look is both comfortable and chic for me and if I decide to wear tights with this look, I opt for something fun (kinda like the purple tights I'm wearing below). I also love the look and proportion  of an oversized sweater dress, like this one,  with over-the-knee boots. Do you have a winter uniform for brunch or otherwise?

Boots: Unbranded similar here
Dress Maggy London (sold out) similar here
Bag: Michael Kors Kelsey here