New York City and Mahwah, N.J. — Premium Apparel LLC, an affiliate of New York City-based private equity firm Sycamore Partners, has entered into an agreement to purchase multiple clothing brands from Mahwah, N.J.-based Ascena Retail Group for $540 million. The apparel and footwear brands in question include Ann Taylor, LOFT, Lane Bryant and Lou & Grey. Under the terms of the deal, which is expected to close by mid-December, Premium Apparel will acquire the brands on a cash-free and debt-free basis. Premium Apparel did not specify how many of …