For a light-hearted bit of amusement, which looks better on a petite, slender or athletic woman, yoga pants or leggings, or are they interchangeable?

You see women come from the gym, you see them stop by the coffee house headed for the gym, some are not even going to the gym but they all seem to wear the same leg gear. Some are yoga pants, others are just leggings, and maybe they are interchangeable. On petite, athletic, or a slender woman which looks the best on them from an aesthetic point of view, leggings or yoga pants? Does color or pattern add anything in the positive? If it has a pattern such as zebra stripes, does that still make them yoga paints are just plain leggings?