Young Boys Shower Is It Safe For Young Children To Sit Around In Wet Clothing?

Is it safe for young children to sit around in wet clothing? - young boys shower

We have lately very wet and now my daughter-in-law called with my grandson (eight, seven and three years), who have been caught in the clothing of the child shower. The wet (not presented correctly on the waterproof was) and when it began to bucket had to stay here (even though) just a short visit to the planning. The children trembled (even if they later dismissed), and he suggested I change into my clothes before I have to change two major here, if after school (he says they are "old, but my grandchildren love it, and I do not know if she had nothing to do).
She refused and said only that "the warming in the series!
Is it dangerous to wear wet clothes for kids?
I am very concerned because it affect the bones and cause arthritis in later life.
When my own children were wet, my clothes and put them in a hot bath and then wrapped up, even in summer.
Is it irresponsible?