@Francis,
Hi Francis.
I've never known anyone who has a problem with kids of any age, little kid, tween, teen, or adult women wearing bikinis. It's just not a big deal, they've been around forever.
What I object to is using verbage that makes the item in question sound sexual, when the word used to describe it is incorrect.
A push up top, bra, bathing suit top is one that has an underwire, and not just any underwire. An underwire that pushes a woman's breasts upwards and together.
The bathing suit top in the picture obviously has no such underwire. Whoever is complaining about this top must just be very conservative, which is their right with their children.
But this is NOT a push up bikini top, meant to be provocative.
The top and bottom look very similar to one I wore 40 years ago, when I was 12. I didn't view it as sexual. Didn't seem that anyone else did either. Except some pervert maybe.