It's not a "shorts leg". It is a divided skirt. As Grace said, one side is designed to "wrap" the leg. She said thigh, but if you want to be pedantic, the top part of her leg that is above the hemline. No. Check the episode with Helen Noel (Marianna Hill) crawling along a crawlspace in "Dagger of the Mind". (Note: the still on the Internet, which we found last time this argument/discussion came up is actually a bad Photoshop.) Assuming Noel's mini is the same design as Rand's, there is a glimpse of what appears to be blue knickers; same material as the mini. Except, according to Grace Lee Whitney, the material you glimpse is actually part of the mini, ie. there is a fabric divider in the garment that prevents it flipping up. ie. Not knickers alone. Maybe someone who bought a Janice Rand uniform in the Paramount auctions will chime in with photographic proof? Incidentally, "Dagger of the Mind" and "The Galileo Seven" were Grace's least favourite episodes, since Janice Rand was in the first draft of each script.