No idea. I never wear white socks. I'm sure SOMEONE must make them, though they may be marketed to guys.
I'm wearing a pair of alice + olivia tights/leggings and a wool skirt today. The leggins are "designer" but merino (thanks to TJ Maxx, I would NEVER have paid $150 for them!!). I'm warmer in this 20F weather and snow than I would have been in jeans. Plus I knew if the car got stuck I'd be more likely to get help in a skirt.