We live near the beach so it's no big at our small local mall, no one looks twice... but it is at the huge Mall not that far away, they have a strict dress code which they do enforce...probably to actively discourage people walking in straight off the beach with just thier swimmers on I imagine
Thanks for the advice re escalators Kier! Will be watching where I put my feet very carefully - I really don't like them at the best of times, unfortunately this mall has no public access stairs from their carpark to the main shopping level, only escalator or elevator.