As first seen on blog "Preppy Fashionist" here Those Cobalt Blue Over The Knee Boots
She is wearing tights similar here: Black Semi Sheer Tights
Semi-sheer tights are the perfect foundation to workweek looks. This luxurious, 30 denier pair features a waist-control top and well-distributed compression through the legs for maximum comfort and strong support. The shaped heel means they fit on the foot perfectly, too