“So, is it safe to assume that you believe frum women shouldn’t operate (let alone patronize) a lingerie shop (as, I believe, Kasha believes*)?”
Those stores shouldnt exist since it promotes people being untznius in the home. Even a husband and wife has to show some tznius and wearing lingere is so against that that I cant think of any reaons why it shouldbe muttar for such a store to sell to frum yidden.