For those worried that there may be less topless bathers in Western Europe, it's worth remembering that British girls on holiday in Spain and Greece are still bathing topless on the beach in high numbers. So go where they go
I can't comment on France or Scandinavia, but there are still plenty girls from European countries going topless in Ibiza. If you take the very busy section of Bora Bora at Playa den Bossa as an example, yes there are probably less topless there on average than there used to be. But if you stroll down the beach in either direction, you will still see plenty. The German girls there are most definitely still going topless in high numbers.
There are also a lot more Eastern Europeans in Ibiza these days, and plenty of them seem to be going topless.