HotgreenpepperWomens Halterneck Strapless Bandeau Twist Push Up Tie Dye Bikini Set Swimsuit

Hi. I have a small boobs (A cup) and im afraid mediumis too big if it has only a thin layer of padding. How much padding this bra has?

I am 10-12 but are these cut small?

Are these bikini tops under wired

Im a 12/14 but the sizing doesnt cater for this. Should I go for the 14/16?