Allow me to quote something of mine from another thread where I was discussing revisiting The X-Files through all nine seasons in succession. It could have some bearing on the women of TOS.
I also think Gillian Anderson did a fantastic job of portraying a smart and powerful woman with loads of allure yet without ever resorting to cliched tough broad or TV femme attributes. Scully could feel pain and doubt and fear, but she always gets through and gets the job done. She makes so many of genre TV tough girls look like posers. She radiated sex appeal (in my eyes) without ever resorting to cliched notions of sex appeal. And I can't recall once seeing her in anything really skin tight or overly revealing. The catsuit girls of most sci-fi are a joke compared to Scully.