Today, my wife and I went swimming with our kids at the local pool.
We don't go swimming that often, specially not since covid.
My wife was wearing a non-padded bralette style pink & white bikini.
After hitting the water, I noticed that my wife's nipples were at full attention.
However, after having a better look, I could clearly her areolas through the fabric.
Now my wife isn't a prude. We often can be found a public sauna centers (nude & coed), nude beaches and nude swim events. So lots of people have seen her naked already.
But when she's a bit exposed like that in a situation where you don't expect it, it still is a bit of a turn on to me.
When I told her about her bikini being see-through after we left the pool, her reaction was funny.
She said: "Well if they don't like what they see, they shouldn't be staring at my breasts".

I had expected that she would want to go out and buy a new bikini, but she said she likes that particular one and will keep on wearing it for a while