As first seen on blog "From Brussels, With Love" here: Don't you know?
She is wearing tights similar here: Black Semi Opaque Tights
Ultra-comfortable tights that feel phenomenal on the skin. Shape your waist with the built-in control top. Dig-free microfiber waistband with smooth laser-cut edge. Cotton gusset and non-binding sandal toe 35 denier, semi-opaque matte stretch nylon.