Calling for answers

Source: Artswithoutborders.com

This is an "infamous" M.F. Hussain painting's The question I have is simple and straight.

"Why is Sita naked here?"

I can possibly find a fairly simple and straight explanation for Hanuman's nakedness. He is a monkey. He is great, strong, cool, adorable and admirable monkey. Clothing him up may be just euphemism on our part. But I don't understand Sita's nakedness.

I made a quick, short search and was flooded with opinions tangential to my question.. like "freedom of expression" and "naked goddesses in Hindu temples" and "nakedness implies purity" and all that. So, just gave up. I just want to know the answers, I would hope, from M.F. since he has created this and he is the only one who can come up with the *real* reason. But anybody's direct, unprejudiced view is invited.