maybe they've realized that men respect and value women more when they are modest and don't put out desperately.
Hope so. Practicing or non practicing. Muslim or non muslim, I think it's inbuilt in men and women to see through their personal choices and respect a woman (or man) for their modesty. I went to get some stuff from a timber yard once and the man (typical non muslim builder) actually apologized to me for the 'nude' calender on the wall. I thought subhan Allah, how nice - that's his natural fitrah talking.