<p>Diane's Beachwear goes back to the beginnings of the bikini, when "Beach Blanket Bingo" was all the rage. From its origins on the Manhattan Beach Pier specializing in custom-made bikinis, the boutique quickly earned a good local reputation.</p> <p>Since the swinging '60s, the company has grown into a thriving chain. There are 18 locations throughout Southern California.</p> <p>Diane's has frequent sales on a wide variety of products. Gift card denominations are $25, $50, $100, $250 and $500.</p>