They're technically called culottes that you're admiring.
(Known as a divided skirt.)
It's literally the French word for "breeches."
Article of clothing that falls to knee, or a tad below.
First came into prominence when women realized that if you're undecided whether to wear shorts or a skirt, culottes are the answer.
Gained further prominence when women decided even if you're not undecided, it's the answer.
I imagine this exact replica of the classic 40s version will provide some fun.
Culottes Button-Ups (No. 2636). Crisp 100% linen. Below the knee length. Real shell buttons on side. Faithful details like a stitch-down pin tuck on front and back. Flap pocket on back right. Slimming and graceful.
Its split personality made it originally designed for horseback riding. Still is. Makes riding a bike infinitely easier. Provides smooth exits from sports cars.
Just standing there is good enough for me.
Women's Sizes: 2 through 18.
Colors: Less-Than-Bashful Red, Cool Nautical Blue.