As first seen on blog "Help! I have nothing to wear" here: Colourful flower dress and black tights-knee
She is wearing tights similar here: Black Over-The-Knee Sock Tights
Mock ribbed cuffs above an opaque knit give sheer pantyhose the appearance of over-the-knee socks.
Junya Watanabe Pink Block-colour Tights
Express Swiss Dot Full Tights
Francescas Dalis Silver Opaque Tights