Hottest ST BABE was the Vulcan from ENTERPRISE. One of the few femmes who could carry a cat suit. Marina is lovely but looks frumpy in a her suit.
If you adjust for inflation, Arlene Martel (T'Pring from Amok Time) would tie with Jolene Blalock. Putting her in a catsuit would have earned an x-rating. Arlene's make-up and non-descript costume totally worked against her sex appeal, if you ask me. There are some amusing behind-the-scenes pics on imdb. https://www.imdb.com/name/nm0551458/mediaviewer/rm3892643840