Women's Cacique Boost Plunge Bra 44DD Royal Blue Because sometimes it's what you don't see that matters most, our Invisible Backsmoother keeps you smooth from every angle, no bumps or lines. This soft, microfiber plunge bra offers a boost to your cleavage and smooths your silhouette with an invisible backsmoothing wing. FIT: Boost plunge bra Plunging neckline Boost push-up lining Underwire Back hook-and-eye closure