Our Summer Siren Underwire Bikini Top is perfect for your next sunny escape. Made from high shine swim fabric, the underwired, plunge shaped graduated padded pre-formed cups offer a subtle uplift to beautifully accentuate the bust. Featuring adjustable shoulder straps and a clasp fastening at the back, it is finished with rectangular and circular iridescent rhinestone detailing for an eye-catching look. Wear yours with the matching Summer Siren collection for a sophisticated pool-side style. Discover our full collection for more. The Summer Siren Underwire Bikini Top By Ann Summers is perfect for your next sunny escape. Made from high shine swim fabric, the underwired, plunge shaped graduated padded pre-formed cups offer a subtle uplift to the bust. Featuring adjustable shoulder straps and a clasp fastening at the back, it is finished with rectangular and circular iridescent rhinestone detailing for an eye-catching look. Wear yours with the matching Summer Siren collection for a sophisticated pool-side style.