What I loved about Hathaway's version was that it was very sexy without being overtly sexual
Her telling suggestively telling Batman, "Still don't trust me...how can we change that?" is so much more of a turn-on for me than Catwoman licking Batman's face (or herself). When I was younger that stuff would drive me crazy, but I enjoyed the more subtle sexuality of HathCat because my mind can totally fill in the rest. She used the implication of sex to her advantage rather than just being kinky for the sake of it. I bought it.
Both are valid interpretations of course.
And yes, the Returns suit is still fantastic. Nothing like a little Batman Returns to get you ready for the holidays.