You can count on these cold-hardy perennials to take a polar vortex or two in stride and come back strong in the spring.

From Blair and Serena to Jenny and Georgina.

Explore ibekwedaniel232's 4937 photos on Flickr!

This year, we like it cozy and comfortable. That's why I've put together my absolute 25 favorite casual winter outfits that I think you'll love too.