I work with someone who was at first a cross-dresser and is now a post-op transsexual. Admittedly, I work in a very liberal-minded sector, but there's nothing to stop you doing that too.
In short, yes, you should have that right, but you may find it easier to claim in some places than others.
In short, yes, you should have that right, but you may find it easier to claim in some places than others.