I feel out of touch with general opinion on this one. Aside from hygiene & sun protection issues, is it OK or not OK for a small child to be nude/bottomless - on the beach? in the park? in the paddling pool at the park? on a campsite? in somebody else's garden? in your own garden if it's overlooked?
If it's OK up to a certain age, then what age?
Is it different for boys/girls?