I know that halacha has limits on wearing items of the wrong gender (beged ish or beged ishah, depending on whose clothes we're talking about). Does this extend to people's online projections, i.e. their gravatars? For example, was wearing this item that Stack Exchange gifted me with beged ish?
If so, does it apply only if the gravatar looks like a person, or does it also apply to animals and monsters?
What about if the gravatar has no obvious gender?
Does it matter if the gravatar, while ungendered, is already wearing things that belong to one gender?
Does it only matter if the gravatar was created 13 (or 12) years ago or longer?