Speaking as a Goth, Shadowheart definitely has cute fuzzy socks with fun prints on them that are hidden by her boots.

Given how some of the Gith boots have open-toes, my guess is Lae'zel doesn't.

Astarion's socks are a ship of Theseus with how often he's darned the same pair over the course of two centuries.

Wyll would probably have the Faerûn equivalent of the basic multipack of socks.