Margot Robbie paired her classic flat black boots with a warm turtleneck and shearling-lined coat at the Sundance Film Festival.

Get a similar look with this pair from Ted Baker London.

The collection at Dolce & Gabbana was medieval fairy-tale themed -- from the hooded capes right down to these chainmail-inspired flat boots.

Try these Jeffrey Campbell Valdez Studded Leather Boots, $420, for a similar look at a more one-season-only price point.

At first glance, the shoes at Rick Owens look like ordinary sneakers. But a closer look reveals the flat soles turn into over-the-knee leather boots that almost look comfortable enough for some high-fashion jogging.

Shay Mitchell kept it comfy and casual with brown leather boots (similar to this pair from Chinese Laundry), jeans and a loose-fitted sweater.

Alexander Wang took a traditional riding boot and gave it an over-the-knee update that also comes in all-black with rose gold detailing.