Hi, thanks so much for your inquiry! While it's not imperative to pair the Elomi Isis Bandeau Swimwear Bra with the Elomi Isis Bandeau Wire-Free Tankini Swimwear Top, we do recommend doing both! The Wire Free Tankini has double-layer wire-free cups, which will give minimal support. The Swimwear bra will give great support and offers foam lined cups for modesty. The bra generally just enhances your look in the tankini.
If you're looking for tankinis with built in cups or underwires, I have provided some options below!
Please feel free to call us with any style and fit questions, we would happy to help you find the perfect fit for the season: (877) 728-9272.