I have to say wearing a bra is the most wonderful feeling I have as a crossdresser and it is my favourite clothing type i like to wear. I only own a few bras but my sister is fine with me going through her ones at least she doesn’t say No. I guess she enjoys seeing me in bras as well.
I think it is the same feeling for many crossdressers in general. I haven’t used any breast forms yet but i would love to do that one day. Also i would like try various types of bras no need to say i hate the plain ones!!