Could this be my Grandmother Margaret Alice Redman.

[rossko57]

She was a very brave lady to be seen wearing a swimming costume like that,

I've seen (but don't possess) a photo of my grandmother in an equally racy swimsuit, she told me  they were knitted.  Rather like a modern T-shirt, and yes exactly the same effect when wet.  The more modest wore a chemise underneath, like I think these ladies are, but it didn't help much, so not all the gals bothered.

And the dashing gentleman of the period wore similar, she continued wistfully ...

[iforani]

Yes this is the same lovely lady. FYI here is a photo of my paternal grandmother (Dixon) and two of her sisters circa 1920.

[jettejjane]

Lovely pic iforani.