@Spot261 I still do not have a clear answer. It never seemed personal, but Berman did think every cast should have a clearly identifiable "babe." It seems that a special bra was part of every actress' costume. The major exception would be the original Voyager cast, which Berman was more hands off on. On DS9, Dax was conceived as the "babe" with brains, but Farrell was the best they could get to fill the role. Of course, the look of every cast member was extensively scrutinized, whether Mulgrew's hair OR Brooks' hair.
The other thing, related to the negotiations, is clearly less excusable. There isn't a whole lot of information, and no one seems to have had a similar experience.