KAREN MILLEN MID-SEASON SALE, UP TO 50% OFF By admin on April 6, 2014 Friends and Family Sale: Get 20% off all full priced items. Use promo code KMFF2014. Valid Wednesday April 2 through Sunday April 6th. New Reductions Taken! Get up to 50% off at Karen Millen’s Mid Season Sale. Hurry, this sale won’t last long. Free Shipping on all orders of $250 or more at Karen Millen US.