[Avodah] fashion models and opera singers

[Aryeh Stein]

[From Areivim] RMF quoted RSC as follows:

>>>Offhand, however, it is not the singer who transgresses, but the
men who come to hear her. And since these men would presumably attend
the opera anyway, the female singer would not be liable for *lifnei
ivver* (=aiding and abetting a transgression).>>>

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Can the same thing be said about a frum female who wants to wear a
bikini at the beach - it's those men looking at her that are
transgressing, not her?  And, since these men are at the beach (where
there are other women dressed in a similar fashion), there's no
problem with "lifnei eiver."

I think we all would agree that this would, in fact, be wrong.  If so,
how is it different than singing at the opera - both are "displaying
their erva"?

KT,
Aryeh