Yes, bikini tops for babies and toddlers do look like bras, MightyQuim. By which I mean, they look a hell of a lot more like bras than they look like another, more appropriate garment for a baby. Like a vest, t-shirt or other top.
I'm finding this whole discussion fascinating, not merely because it sheds light on my own 70's swimming experience. We holidayed mostly in Portugal, where my dad is from. Every single little girl (i.e. under 10) on the beach wore short shorts or a bikini bottom. You NEVER saw them wearing the tops and I suspect they weren't even sold together, because that particular society saw no need for it. My dad used to spit feathers at the very idea of a young girl in a bikini, which he saw as unnecessarily sexualising her. I agree with him. If I had a daughter, she'd wear a swimsuit or a bikini bottom. I wouldn't want her to feel out of plac among friends, so maybe if holidaying in the UK, a one-piece would be best.
FWIW, lots of people have questioned why one-pieces are seen as better than bikinis (to the bikini-top haters). Clearly, the difference is that in a one-piece, the fabric covers the whole torso. Tummy too, though there's nothing sexual about a stomach. A bikini top preferentially covers only the (non-existant) breast area, therefore it really does (in my mind) draw attention to that area in a young girl who would otherwise not have that area highlighted. Ok, it sounds over-thought when it's written out like that
, but I think that's what most people have in mind when they say they prefer one-pieces for young girls.
Personally, and you can flame me for a snob if you like, I see bikini tops on babies and toddlers in the same light as those stupid headbands with bows on for girl babies. I see, and I judge. Unnecessary. Why do people see the need to accessorise their tiny girls? They don't do it with boys. 