Cleo by Panache:
Hattie Twist Front Bandeau Swim Top
Bra-sized, bold print bandeau underwire swim top
U.K. cup sizes. See size chart for U.S. conversion.
Foam-lined cups with side boning for support
Stretch halter straps included
Non-adjustable, snap back closure
This didn't hold me up like a normal strapless bra, but more like a strapless sports bra (you know, where you're fully covered and strapped in). It was great for avoiding strap tan lines (obviously the reason for a strapless swimsuit) while not constantly being in fear of falling out or nip slips. All I have done so far is sunbathe/walk around and basic swimming around the pool, but I didn't bounch while walking and it didn't slip down getting out of the water