From Joepie magazine 1980, reveals:
Frida sunbathes naked

“I do it for Benny, he likes it better that way” according to Frida.
“The two of us sail our boat deep into the see. Then when we are miles away from nowhere I take off all my clothes and I sunbathe.
When another boat passes by it doesn’t matter because I’m behind a screen”
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Things you wanted to know about ABBA but were afraid to ask! ;-)