From our personal experiences, the style of dress is the first impression one makes and especially for a couple. Can be elegant but also being elegant in a very casual way, excites the looker knowing that they spent time choosing what to wear. Of course a beautiful sexy woman can get away just being naked, it's the covering to accentuate her lines that attracts the men and sometimes women.
In Jamaica one year at a sex resort, my wife put on one of the most skimpiest of bikini to walk to the naked part of the venue. Her tight body holding the bathing suit almost magically. On the walk she got approached by several men marveling at her beauty and telling me how lucky I was. There reaction was quite visible with their erections, quite seldom seen at a swingers club unless coerced.
My wife is excited by a well dressed man, very excited, him being fat, muscular, old or young doesn't matter to her, she melts for them and shows her they have confidence and success, real or not, but it does make an interesting show for me once we get back to the room and watching her make savage love to him or them. I point out likely candidates to her , handsome, well endowed and interested in her but to no avail. She chooses since it's her fantasy, as ZZ Top says in the song "Every Girl Loves a Sharp Dressed Man"