I need new swimwear. I have a basic one piece that I wear if swimming in a pool (whenever they open). I find one pieces a pain on the beach though, because they are awkward to get on and off. If I swim spontaneously when walking on the beach I like to be able to at least get the top off to get my clothes back on because it's invariably not hot enough for everything to dry and to just get dressed over it. I don't know if that sounds weird or if it's a normal problem.
I'm 5ft 8 and have lost 5.5 stone, currently weigh 12st 6lbs so still some more to go. In my head I'm still 18 stone though. I have always had a warped body image because I refused to wear a bikini when I was 18 and a size 10 because I genuinely thought I was fat, so I just have no sense of how anything looks to be honest. I feel good now compared to when I was bigger, but then an internal voice is like oh god you're still 2 stone heavier than when you were slim and you thought you were big then 
Anyway so I was thinking I'd get a tankini to solve both the one piece problem and body confidence problem but then read some threads on here saying if you're going to have a two piece a bikini is more flattering. I've never felt good in a tankini so that follows. But is it true? Are tankinis unflattering? And if so what kind of bikini to go for? I have pretty big boobs still and want them to be secure so can run around the beach with the kids, most bikinis seem to be small triangles of fabric over nipples designed for people with lovely pert A cup boobs. I also don't really want something too fiddly and bra style because cup sizes never seem to be very accurate and vary across brands. Then bottoms, would high waisted accentuate my stomach? I have a bit of a small overhang from weight loss/csection so need some coverage at the front but always think shorts make your bum look big.
Any advice or suggestions gratefully received. I did take some faceless underwear pictures in case that would help but don't think can bring myself to post them!