Ladies do not like the metal shirts
Ya I think that as long as you carry yourself with an air of confidence and don't look like some basement metal nerd then girls aren't really gonna be put off by the average metal shirt. As long as it's not outright offensive or gross or something (i.e. any death metal shirt)
There was a period a few years back (and may still hold true) when girls dug band shirts, being as they were trendy and all.
Ladies do not like the metal shirts
These times are long, long gone.