[Retroman]

Ive already explained this elsewhere, so i'll keep it brief...
As psychologists would say, everything we do says a little about ourselves and how we are/what we think etc.

And taking your clothes off for photo's is no exception.
It's what that does to a person, and makes them think, and how it makes them act..
Something I don't think the twins need.

As for wearing less in the pool...
It's a swimming pool. There's only so much you should be wearing in there in the first place. That's a completely irrelevant point.