FORGET BRICKS AND MORTAR: Lucky magazine is getting into the pop-up store business, but it won’t be happening on a trendy corner in SoHo. The title is avoiding those construction costs and launching the store online, with a one-day sale on Facebook. In partnership with HSN, Lucky is working with five designers, including Foley + Corinna and Thread, to sell exclusive pieces. The sale will begin on Friday and Lucky and HSN will receive a portion of all proceeds. — A.W.