Cold feet

This is the view from my desk a couple of days back and even if there was no snow left today and very sunny, it was freezing cold outside and after 10 min (!!) in the park with Alexis, I realised I had to go back home since my feet was about to turn to ice. Such a boring mother, Alexis was so disappointed!
So ... my wonderful expert readers, once agin I need the advice from you all and hopefully we can all help each other to keep us warm this winter.

What do you have on your feet that is super warm during the winter period?

I went directly and tried out a pair of UGG's. I bought my first and only pair 2002 when they hit the world and became popular and ever since I've sworn to not buy them again since every teenager also wear them all around the globe. But seriously, they are dead comfortable, easy to put on, warm ... I tried the longer version in black suede and they are actually pretty okay if we're talking about the aesthetic point of view. M think I should get Sorel or Moon Boots since he is sick and tired of me always being cold, but I mean you need to be able to wear them to my city life also and Sorel and Moon Boot is too much the Alps and skiing. Or?

What's your thought and advice, I'm eager to find out and I think we all are eager to hear one anothers view in this!

Merci!