Not quite in public, but when I first left home I got a job in an art college which involved taking clothes off and sitting still for ages(artists model). It was the sitting still that was the hardest part.
I quite regularly sun myself on nudist beaches (only south coast)I don't have any worries about nudity - I love swimming naked. I have also mooned some men who worked in a builders yard and were always making comments about my "nice tits" unfortunately the comments changed to "nice arse"
Mandy