I remember reading the Making Of Star Trek book and back
on TOS (The Original Series) the costume designer wrote about
how he worked in as much cheesecake as he could for the
alien babes. Even the terra babes on the crew had short skirts.

In the revival series' they took an absolutely
Puritan approach in the 80's. Then came Jeri Ryan as
Seven Of Nine in ST-V (Star Trek Voyager.) Still, there
seems to be consistent pattern of keeping sex out of the
program-- unlike the rest of tv and unlike ST-TOS.

The future isn't what it used to be.