Think bikini top meets halter detailing. This harness can be strapped on for the gram, and removed if you prefer more simple separates to swim or dance in. 
A bonus: you can style the harness in two different ways by crossing the straps at the back. 
 
It’s suitable for low impact sport, but also as a layering option for low back tops or plunging necklines. 
And if you really want to make a splash, this suit is also pool friendly. 
 
The Eilish top is available in black and white.