Next up, it's my personal shopper, aka my sister. She's actually a world famous (to me) psychologist who happens to also be the most beautiful and fashionable person I know. Here's what she had to say about line in fashion design.
Mixing lengths (see photo at right above). When you combine varying lengths in one outfit the effect is beautiful, sleek, interesting line illusions. Much like in the famous CAKE song, “Short Skirt, Long Jacket” (I will pause for you to Google it and listen to it now) I too love a short skirt or mini dress accompanied by a longer coat as an example of this design concept.