First off, Allah is called "He" out of respect. Calling Allah "it" or "she" would not be appropriate. Allah is not like you or I, no one has seen him and therefore no one knows what he truly looks like. Allah tells us in the Quran that nothing in the universe resembles Him.
Both men and women are required to cover up in Islam. Covering up has always been a sign of modesty. If all the females (and men for that matter) started to display their "natural beauty" the world would be full of lust and desire and shameful notions, non?
“And say to the believing women that they should lower their gaze and guard their modesty; that they should not display their beauty and ornaments except what must ordinarily appear thereof; that they should draw their veils over their bosoms and not display their beauty except to their husbands, their fathers, their husbands' fathers, their sons, their husbands' sons, their brothers, or their brothers' sons or their sisters' sons….” (Quran 24:31).”
Also, nowadays, it is common to see men wearing jeans/shorts and t shirts (i.e. being covered up mostly) whereas women clothes get tighter and shorter. Everyday I see men openly staring and making remarks about women passing by etc. Women displaying their natural beauty spend hours trying to look beautiful and pleasing to the eyes of strangers. In Islam, a woman's beauty is saved for her husband. It is not meant to be displayed to the public.