I think there's a little exhibitionist in every crossdresser. Wanting to be seen as pretty, feminine, etc., or just plain wanting to be seen! Part of it might be the submissive aspect that often goes along with the crossdressing and the humiliation that turns many of us on.
Maybe that's why I, and many other cd's just love babydoll pajamas, especially those from the 1950's and 1960's. Babydolls, with their short hems, lace, ruffles and pastel colors always seem to bring out the most feminine of looks and feelings.
This photo was taken from Etsy, a site I wrote about a few days ago where you can find plenty of vintage lingerie!