Curvy Kate Seashell Halterneck Swim Top (CS1321) . Get ready for a day of fun in the sun in this cute swim top. Features a sweet seashell pattern. 2-part, lined, underwire cups have angled seaming. Bra-size cups. For your best fit, see Size Chart. Elasticized top cup edge for a more custom fit. Center panel - Triangle sits low and is arched. Hanging silvertone seashell at top. Mesh-lined sides and back have sewn-on elastic edges for custom fit. Side boning for additional support. Covered elastic halter straps tie at back of neck. Plastic barrel closure at back. Please Note: For your best bra-size Curvy Kate fit, determine by your UK size or see Universal Cup Size. See matching items: Curvy Kate Seashell Ruffle Swim Brief Swim Bottom CS1335 Curvy Kate Seashell Tie Side Swim Brief Swim Bottom CS1315. Curvy Kate Seashell Classic Swim Brief Swim Bottom CS1305.