Maxine of Hollywood NWT Tankini swim top.
It is super colorful and has removable padding, underwire and adjustable straps. The straps are adjustable by a button (see pictures).
The sides have ties that make the ruching adjustable.
All in all this is a great piece.
Armpit to armpit measures 16" and armpit down the side is adjustable.
I have this priced fair but make an offer. All reasonable offers will be considered
I have other bathing suits listed so please take a look.