I wasn't thinking about the length. Maybe it's just the angle, but I thought it looked a little narrow, or tight, at the knees, like I remember seeing on women decades ago. Is that style fashionable again?
Yes. Women did wear those decades ago. Then in the '50s, big fluffy skirts (al a June Cleaver) came in style. Then the '60s brought miniskirts, at some point maxis were kind of a small trend. Midi-skirts in the '70s-'80s, especially in a looseness that now looks dowdy (watch "Broadcast News" for a refresher on dowdy '80s fashion -- yet possibly back in style in a decade or two). By the '90s miniskirts were back! Since around the turn of the 21st century, various length and shapes of skirts have become simultaneously acceptable. Including the pencil skirt. Straight and tight, like TV (or comic) Lois Lane might have worn, probably to just below knee-length, stockings, high heels, maybe a crisp tucked-in (sorry, Lee!) shirt.
Modern Lois Lane is wearing that same basic thing in a more modern length. No stockings. And likely even a bit roomier than early Lois' skirt.