I absolutely mean no offense by this post, for starters.
I was at an LGBT club last night and was talking to two people who were presenting as what I would say "definitely" female, but I could still read them as biologically male. I avoided using pronouns with them because I didn't know if they identified as men and enjoyed wearing women's clothes or if they identified as women and their body betrayed them. I thought it would be rude to ask for obvious reasons, as we had just met.
My question is, is there a way to "tell" if a person is a crossdresser rather than a woman? I would venture to say that, in my experience, trans women dress and act more conservatively than crossdressers, but I'm looking for your advice/opinions. Additionally, do you think it would be offensive to a crossdresser to refer to them with female pronouns? I'm not very well versed in cd and don't know if they like to still be referred to as men while in female mode, so forgive me if I sound ignorant. I just don't want to upset anyone and try to be as respectful of identity as possible.